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WorksheetsFinal Exam Questions
Total questions: 35
Worksheet time: 1hrs 10mins
An object is moving with zero acceleration in the +x axis. The velocity versus time graph of this object is
When does the object have a negative velocity?
0 - 4 s
4 - 7 s
6 - 7 s
4-6 s
0 - 7 s
Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance traveled.
The displacement is either greater than or equal to the distance traveled.
The displacement is always equal to the distance traveled.
The displacement is either less than or equal to the distance traveled.
The displacement can be either greater than, smaller than, or equal to the distance traveled.
They are the same thing and thus are equal to each other.
The area under the curve of a velocity versus time graph gives
position
time
velocity
acceleration
displacement
Suppose a ball is thrown straight up. Ignoring air resistance, what are the values of the velocity (v) and acceleration (a) halfway up to the maximum height assuming upwards is positive (+) and downwards is negative (-)?
Velocity is Positive (v=+) & Acceleration is Negative (a=-)
Velocity is Negative (v=-) & Acceleration is Negative (a=-)
Velocity is Positive (v=+) & Acceleration is zero (a=0)
Velocity is Negative (v=-) & Acceleration is zero (a=0)
Velocity is Zero (v=0) & Acceleration is Negative (a=-)
What is the period for the following wave:
5 s
10 s
15 s
20 s
25 s
What is the amplitude for the following wave:
0.005
0.02
-0.01
-0.02
none of these options are the amplitude
The frequency of a wave decreases. What happens to the distance between successive crests if the speed remains constant?
It increases.
It remains the same.
It decreases.
It cannot be determined from the information given.
The frequency doe not affect the distance between successive crests.
During an earthquake a wave is created and travels at 600 m/s. If the frequency is 300 Hz, what is the length of the waves?
180,000 m
200 m
180 m
2 m
The length of the waves cannot be determined
Two wave pulses are travelling along a string, one is traveling toward the right and the other toward the left. The one on the left has a negative amplitude (displaced below) and the one on the right has a positive amplitude (displaced above) At the point that they occupy the same region of space at the same time
constructive interference occurs.
destructive interference occurs.
a standing wave is produced.
The reflect back after hitting each other.
no interference occurs.
A person with a mass of 70 kg is hanging from a pull-up bar 2 m above the ground. How much work is gravity doing on the person?
140 J
70 J
35 J
2 J
0 J
A purple 2 kg ball is rolling at 4 m/s. A yellow 8 kg ball is rolling at 1 m/s. Select the pair that matches which ball has the LEAST kinetic energy and LEAST momentum.
Purple has least kinetic energy.
Yellow has least momentum.
Yellow has least kinetic energy.
Purple has least momentum.
Yellow has the least kinetic energy.
They both have the same momentum.
Purple has the least kinetic energy.
They both have the same momentum.
They both have the same kinetic energy.
They both have the same momentum.
What happens to the kinetic energy of a moving object if the net work done is positive?
The kinetic energy increases
The kinetic energy decreases
The kinetic energy remains the same
The kinetic energy is zero
Work and kinetic energy are unrelated to each other.
Power is defined as…
How much time is used
How much force can be applied
The rate at which momentum changes
The rate at which energy changes
How bright the sun is
A 2 m tall lacrosse player is running at 2 m/s for 10 s. She has a mass of 50 kg and is 50 m away from her car. What is her momentum?
400 kg m/s
200 kg m/s
100 kg m/s
10 kg m/s
There is not enough information to determine the momentum
A 500 kg car travelling to the right at 40 m/s and slams into a 750 kg SUV driving to the left at 20 m/s. As they collide, the stick together. What is their velocity afterwards?
35,000 m/s
60 m/s
28 m/s
-28 m/s
4 m/s
Which of the following is NOT an example with explanation demonstrating Newton’s laws of motion?
You place your phone on the table. It doesn't move because there is a net external force of zero.
The Voyager Probe travels in space in a straight line. It will not change its path unless an external force like gravity acts on it.
The moon moves in a circle around Earth. It will not change its path because there is no external force acting on it.
With the same force, a truck will accelerate more slowly than a car. The mass of the truck is larger than the car.
You push against the wall with a force
What happens when a wire moves through a magnetic field past a bar magnet?
It weakens the magnetic field
It enhances the magnetic field
It induces a current in the wire
There is no effect
You can't move a wire through a magnetic field.
In the sun, smaller elements combine to make larger elements (like two hydrogen atoms combining to make a helium atom), releasing energy. This process is called…
nuclear decay.
electron capture.
fission.
fusion.
atomic half life.
3000 J of energy is added to an element with a specific heat capacity of 150 J/kg°C causing a change in temperature of +2°C. What was the mass of the element?
225,000 kg
40 kg
10 kg
0.1 kg
0.4 kg
Which of the following is NOT part of the EM Spectrum?
Radio Waves
Infrared
Cosmic Rays
Light
Gamma Rays
Two objects in space are 20 m apart and feel 40 N of gravitational attraction. If they are moved to be half as far away (10m), how much attractive force do they feel?
160 N
80 N
40 N
20 N
10 N
An insulating sphere with a negative charge is brought close to a conducting sphere that is neutral. What kind of force does the insulating sphere feel?
An attractive force toward the conducting sphere.
A repelling force away from the conducting sphere.
It does not feel a force from the other sphere.
There is not enough information to tell.
Romantic feelings toward the conducting sphere.
What is NOT true for alpha decay?
It releases a helium nucleus (2 protons and 2 neutrons)
The atom becomes more stable.
The element becomes a different one after the decay.
It releases an electron.
It's stopped by paper.
What is NOT a form of heat transfer?
Conduction
Polarization
Convection
Radiation
These are all methods of heat transfer.
What is the work done moving a mass of 5 kg from a displacement of 10 meters away to 30 meters?
300 J
200 J
20 J
10 J
0 J
You are standing in a moving bus, facing forward, and you suddenly fall forward as the bus comes to an immediate stop. What force caused you to fall forward?
Gravity
Normal force due to your contact with the floor of the bus
Force due to friction between you and the floor of the bus
Your mass.
There is no force causing to your fall.
Mass and weight . . .
have the same measuring units.
represent the force of gravity.
represent the measure of inertia.
both stay the same on different planets.
None of the above.
On a plot of Force versus position (F vs. t), what represents the impulse done by the force F?
The slope of the curve
The length of the curve.
The area under the curve.
The product of the maximum force times the maximum x.
You cannot find impulse from a F vs t graph.
Car▲ moves twice as fast as car ⬛, and car ▲ has half the mass of car ⬛.
The kinetic energy of car ▲, compared to car ⬛ is half as much.
The kinetic energy of car ▲, compared to car ⬛ is the same.
The kinetic energy of car ▲, compared to car ⬛ is twice as much.
The kinetic energy of car ▲, compared to car ⬛ is four times as much.
The kinetic energy of car ▲, compared to car ⬛ is one quarter times as much.
Power output can be increased by
decreasing the work done on the object.
decreasing the amount of time in which work is done.
increasing the amount of time in which the work is done.
decreasing the force exerted on an object.
None of the options will increase the power.
How much power is required to lift a 30 N chair 0.20 m in 2 s?
15 W
12 W
3 W
1 W
There is not enough information.
In elastic collisions,
only the total momentum of the colliding objects is conserved.
only the total kinetic energy is conserved.
both the momentum and total kinetic energy are conserved.
neither the momentum nor total kinetic energy are conserved.
Collisions cannot be elastic, only inelastic.
The dimensions of acceleration are
length/time
length/time/time
length/time*time
length*length/time
none of the above
The dimensions of force are
mass ⋅ length/time
mass ⋅ length/time*time
newtons
mass ⋅ time/length
none of the above
