In the graph above, what is the instantaneous speed of the object after the first five seconds?
A) 0 m/s
B) 5 m/s
C) 12.5 m/s
D) 25 m/s
Answers
Answer:
D) 25 m/s
Explanation:
In order to solve this problem we must use the following kinematics equation.
[tex]v_{f} =v_{i} +(a*t)\\[/tex]
where:
Vf = final speed [m/s]
Vi = initial speed = 0
a = acceleration = 5[m/s^2]
t = time = 5[s]
After 5 seconds the acceleration is equal to 5 [m/s^2]
Now replacing the values in the equation:
Vf = 0 + (5*5)
Vf = 25[m/s]
Related Questions
One of the world's fastest helicopters, the Westland Lynx, has a top speed of
4.00x 10^2 km/h. If its kinetic energy at this speed is 2.10 x 10^7J what is the helicopter’s mass?
Answers
The mass of the helicopter is 3402 kg.
What is kinetic energy?Kinetic energy is the energy possessed by a body as a result of its motion.
The kinetic energy of a body depends on its mass and velocity as shown below:
[tex]Kinetic\:energy = \frac{1}{2}mass*velocity[/tex]
[tex]mass = \frac{2KE}{{velocity}^{2} }[/tex]
velocity = 4.00x 10^2 km/h = 111.11 m/s
kinetic energy = 2.10 x 10^7J
[tex]mass = \frac{2 \times 2.1 \times {10}^{7} }{{111.11}^{2}} = 3402 \: kg[/tex]
Therefore, the mass of the helicopter is 3402 kg.
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A book with a mass of 1 kg is dropped from a height of 3 m. what is the potential energy of the book when it reaches the floor
Answers
Answer:
PE=mgh
Where; m is the mass
g is the gravitational force.
h is the height.
the mass is 1kg, the acceleration due to gravity has a constant value of 10ms² . And the height is 3m.
mgh= 1 x 10 x 3 = 30Joules
The orbital motion of a deep water wave extends to a depth equal to.
Answers
__________ is the process of altering light so that the waves are all oscillating in the same plane.
Polarization
Reflection
Diffraction
Refraction
Answers
Polarized sunglasses block the waves in one direction and pass the other plane. Allows us to see objects below the surface of reflected lite coming off water.
HELP ME PLEAS AND FASTT
What is the best location for a tidal power plant?
Question 5 options:
A beach.
The ocean.
An inlet or bay.
Answers
What is the equation for the speed of a wave? Identify each variable.
Answers
Answer:
Wave speed is related to wavelength, frequency, and period by the equation wave speed = frequency x wavelength.
Explanation:
I hope my answer helped <3 Have a nice day
The equation for the speed of the wave is v = λ × f. The speed of a wave depends on wavelength and frequency.
The rate at which a wave moves across a medium is referred to as its speed. It displays the speed at which the wave's disruption or energy spreads. The characteristics of the medium a wave travels through affect its speed.
The equation for the wave's speed (v) for a mechanical wave, such as one moving via a string or a spring, is as follows:
v = λ × f
Here:
v = speed of the wave
λ = wavelength of the wave
f = frequency of the wave
Hence, the equation for the speed of the wave is v = λ × f. The speed of a wave depends on wavelength and frequency.
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A labourer carries a load of 500N to a distance of 100m
The work done is??
Answers
Explanation:
Hey there!
Given;
Load = 500N
Distance= 100m
Acceleration due to gravity= 9.8m/s^2.
We know;
Work done = F * d
W = (500*9.8)*100
W= 490000J
Therefore, the work done by the carrier is 490000J.
Hope it helps...
Four model rockets are launched in a field. The mass of each rocket and the
net force acting on it when it launches are given in the table below.
Rocket
Mass (kg)
Force (N)
1
4. 25
120
2
2
3. 25
120
3
5. 50
120
4
4. 50
120
Which rocket has the highest acceleration?
A. Rocket 3
B. Rocket 1
C. Rocket 4
D. Rocket 2
Answers
In the given four models of rockets, the rocket with the highest acceleration is rocket 2.
Acceleration of the rocketsAcceleration is the rate of change of velocity with time. The acceleration of the rockets can also be determined from Newton's second law of motion with the applied force and mass of each rocket as shown below;
F = ma
where;
F is the applied forcem is the massa is the accelerationa = F/m
Rocket 1a = 120/4.25
a = 28.24 m/s²
Rocket 2a = 120/3.25
a = 36.92 m/s²
Rocket 3a = 120/5.5
a = 21.82 m/s²
Rocket 4a = 120/4.5
a = 26.7 m/s²
Thus, the rocket with the highest acceleration is rocket 2.
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The "Time Bandit" is one of the many fishing vessels from the television series "Deadliest Catch". While searching for crab during one of its crabbing excursions, it travels 15 km north and then 7 km west from its starting position. What was his straight line displacement during this part of its trip? Be careful to read the units I gave you!
Answers
Answer:
Displacement = 16.55 km
Explanation:
The straight line displacement can be found by finding the resultant of both the displacements. The displacements given to us are 15 km north and 7 km west. Since, west and north directions are perpendicular to each other. Therefore, the displacements will also be perpendicular and they can be modelled as the rectangular components of resultant straight line displacement. So, the resultant straight line displacement can be found by using Pythagorean Theorem:
Displacement = √[(15 km)² + (7 km)²]
Displacement = 16.55 km
Hence, his straight line displacement during this part of trip will be 16.55 km
it took 500 newtons of force to push a car 4meters how much work was done?
Answers
Answer:
The answer is 2000 JExplanation:
The work done by an object can be found by using the formula
workdone = force × distance
From the question we have
workdone = 500 × 4
We have the final answer as
2000 JHope this helps you
Sofia needs to go to the grocery store. She leaves her house, walks 1 mi north
to the store, buys some bread and fruit, and walks back home. Which of the
following is true of Sofia's trip to the store and back?
O A. The total distance traveled is 1 mi.
O B. The total distance traveled is O mi.
C. The total displacement is O mi.
D. The total displacement is 1 mi north.
Answers
A, B, and D aren't.
find two rational num between -3 and 2
Answers
Answer:
1 and -2
Explanation:
Basically rational numbers are numbers that can be expressed as a fraction and 1 can be expressed as 1/1 and -2 can be expressed as -2/1.
I have two questions
What is the current of a 24 ohm heating coil in a coffee maker plugged into a 120v outlet.
What voltage will produce 6 amps through a circuit that has 10 ohms of resistance.
plz help
Answers
Voltage = current x resistance = 6 x 10 = 60 Volts
a) The electric current flowing through it is 5 amp.
b) The voltage will produce by an amount of 60 volt.
What is electric current?A stream of charged particles, such as electrons or ions, travelling through an electrical conductor or a vacuum is known as an electric current. The net rate of electric charge flowing through a surface or into a control volume is how it is calculated.
a) When a 24 ohm heating coil in a coffee maker plugged into a 120v outlet, electric current flowing trough it = 120 v/24 ohm = 5 amp.
b) When e 6 amps through a circuit that has 10 ohms of resistance, voltage produced in it = 6 amp × 10 ohm = 60 volt.
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1.1
Which of the following pairs can be classified as vectors?
A. Friction and mass
B. Mass and inertia
C. Inertia and weight
D. Weight and friction
Answers
Answer:
D
Explanation:
Weight and friction are paired as vectors
Which force is represented by the arrow at A?
A) Force of Friction
B) Force of gravity
C) Normal Force
D) Tension Force
Answers
Which force is represented by the arrow at A?
B) Force of gravityLet us understand the situation first and then we will understand which type of force is represented by arrow A
The line to which arrow A is being touched is the ground and the block is being slid down a slope.The arrow A is representing the force that is being applied by the earth on the block and that force is Gravitational Force. So, Option B is the correct choice!!~how are force and mass related
Answers
Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
Some students are investigating how resonance works using two tuning forks. Put the steps in the process in the correct order.
1.
Hold the vibrating tuning fork right beside the other one.
2.
The second tuning fork will begin to vibrate at the same rate as the first one.
3.
Strike one tuning fork on the edge of the table to make it vibrate.
Answers
Answer:
1. Strike one tuning fork on the edge of the table to make it vibrate.
2. Hold the vibrating tuning fork right beside the other one.
3. The second tuning fork will begin to vibrate at the same rate as the first one.
Explanation:
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Please help in my home work.
change 120°F to celsius scale.
Answers
Answer:
48
Explanation:
I'm not sure if this is right I'm so sorry if its not
120 °F
to find:120 Fahrenheit as Celsius.
solution:[tex]c = (f - 32) \times \frac{5}{9} [/tex]
[tex]c = (120 - 32) \times \frac{5}{9} [/tex]
[tex]c = \frac{440}{9} [/tex]
[tex]c = 48.88889 \: degree \: celcius[/tex]
Questions
2.
Rewrite the following quantities using suitable
prefixes
5000 000
Answers
Explanation:
Here,^ represents 6 times 10 and 5 is multiplied. That is 5000 000.
Hope this helps
What happens to the momentum of an object when velocity is kept the same and the mass is increased?
Answers
Raymond cattell created the 16pf self-inventory assessment by first taking 4,504 personality traits and removing all of the __________. a. nouns b. homonyms c. synonyms d. antonyms please select the best answer from the choices provided a b c d
Answers
Raymond Cattell created the 16pf self-inventory assessment by first taking 4,504 personality traits and removing all of the synonyms.
What exactly is a synonym?This is defined as a word or phrase that has a similar meaning to another word or phrase.
By removing synonyms from the personality traits, Raymond Cattell created the 16PF self-inventory assessment.
Hence Raymond Cattell created the 16pf self-inventory assessment by first taking 4,504 personality traits and removing all of the synonyms.
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According to Newton’s law inertia what will happen to the ballon when the force of gravity equals the upward force?
Answers
Answer:
It will stop moving.
Before a diver jumps off of a diving board she has 7500J of Gravitational energy. What is the maximum amount of kinetic energy the diver will have just before she hits the water?
Answers
Answer:
i think it was 7500 j . beacause sometimes we can say that U=K after that thing is near the floor
The maximum amount of kinetic energy the diver will have just before she hits the water will be the same as the gravitational potential energy before take-off. Maximum kinetic energy is also 7500Joules
Gravitational energy is the energy possessed by an object by virtue of its position.
It is expressed according to the formula:
GPE = mgh
m is the mass of the object
g is the acceleration due to gravity
h is the height
If a diver has Gravitational energy of 7500Joules before the diver jumps off, the maximum amount of kinetic energy the diver will have just before she hits the water will be the same as the gravitational potential energy before take-off.
GPE = kinetic energy at the bottom = 7500Joules
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For a substance to change from a liquid to a solid, what must happen to its
particles?
Answers
Answer:
The answer is see the person above is correct They must lose enough other kinetic energy so that the attractions between them hold in place has been vibrate
Explanation:Got it correct
For a substance to change from a liquid to a solid, the particles must lose enough of their kinetic energy so that the attractions between them hold in place as they vibrate. Thus, the correct option is C.
What is Kinetic energy?Kinetic energy is the energy which an object has because of its motion. If we want to accelerate an object, then it is required to apply a certain amount of force. Applying a force requires us to perform work. After work has been done on the object, then the energy has been transferred to the object, and the object will be moving with a new constant speed and no acceleration.
For a substance to change from a liquid to a solid, the particles must lose enough of their kinetic energy so that the attractions between them hold in place as they vibrate.
Therefore, the correct option is C.
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Please help me with this I’ll mark you Brainly
The picture is above
Answers
Answer:
D is correct.
The upward force on the ball must be the same at both locations:
F = M a = 0 = F(upwards) - F(downwards)
If the ball is not being accelerated the upward force must equal the downward force on the ball.
At a distance of 100 km from a small,
electrically charged asteroid, it is found
that there is an electric field of 300 V/m. How much charge does the asteroid
carry?
Answers
Answer:
E = K Q / R^2 electric field due to charge Q
Q = E * R^2 / K = 300 N / C * (10^5)^2 m^2 / (9.0E9 nt-m^2/C^2)
Q = 333 C
Find the magnitude of the sum
Answers
Answer:
8.57 m
Explanation:
To solve the problem, we have to decompose the two vectors along the two directions first:Vector A:- x component: Ax = +9.66 m- y compoment: Ay = 0 (the vector lies along the x-axis)Vector B:- x component: - y component: So now we can find the sum of the two vectors by adding the components along each axis:And the magnitude of the sum is given by Pythagorean theorem:
A 35.0- g bullet strikes a 5.0- kg stationary piece of lumber and embeds itself in the wood. The piece of lumber and the bullet fly off together at 8.6 m/s. What was the speed of the bullet before it struck the lumber? Define the bullet and the wood as a system.
please show work , help
Answers
Answer:
1237.17 m/s
Explanation:
Applying the law of conservation of momentum,
m₁v₁ + m₂v₂ = (m₁ + m₂)v0.035v₁ + 0 = 5.035 x 8.60.035v₁ = 43.301v₁ = 43.301/0.035v₁ = 1237.17 m/sA roller coaster car is released from a standing start at the top of a 20.0-m hill. The car rolls down the hill to a point 10.0 m above the ground, then up a second hill to 15.0 m, and then down again to point X at 8.00 m above the ground. Use what you know about the sum of the kinetic and potential energies to find the car's speed at X.
A.
11.7 m/s
B.
12.5 m/s
C.
15.3 m/s
D.
19.8 m/s
Answers
Answer:
21.5 i did the assesment
Explanation:
How do you determine the effect of initial speed on the horizontal distance traveled by a projectile?
Answers
x(t)=voₓ.t = vo cos α.t
the greater the initial speed, the further the distance obtained
The horizontal distance traveled by a projectile (also known as the range of the projectile) is determined by the initial speed of the projectile, as well as other factors such as the angle at which it is launched and the gravitational acceleration acting on it.
What is a projectile?A projectile is an object that is projected into the air and follows a parabolic path under the influence of gravity. Examples of projectiles include balls thrown or kicked in sports, bullets fired from guns, and rocks or other objects that are thrown or dropped.
To determine the effect of the initial speed on the horizontal distance traveled by a projectile, you can use the following formula:
[tex]Range = (Initial speed)^2 * sin(2 * Launch angle) / gravitational acceleration[/tex]
This formula shows that the range of a projectile is directly proportional to the initial speed of the projectile squared, and is also affected by the launch angle and gravitational acceleration.
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