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WorksheetsPS9 Physics Final Exam Prep
Total questions: 94
Worksheet time: 24hrs 30mins
Which object has elastic potential energy?
a hanging leaf
a burning coal
a rolling ball
a stretched bow
Elastic potential energy is energy stored in an object, such as a spring, due to the object being stretched or compressed. In which position is it most likely that the spring has lost its elastic potential energy?
W
Y
X
Z
At which point does the ball has the greatest gravitational potential energy (GPE)?
A
G
D
C
G
Which would have the LEAST gravitational potential energy (GPE)?
A ball sitting on the ground
Moon viewed from the Earth
An airplane flying 30,000 feet above the ground
A rock sitting on top of Mt. Everest
How could you increase the gravitational potential energy of an object without changing its mass and gravity?
Make the object larger
Lower the object towards the ground
Raise the object farther off the ground
Allow the object to roll on the ground
What is the value of the Earth's gravitational acceleration (g)?
9.8 m/s2
100 m/s2
25 m/s2
3.14 m/s2
Which object has the most graviational potential energy?
A 1000kg car lifted 0.02m off the ground.
A 0.5kg baseball 20m off the ground
A 75kg weight lifted 1m off the ground
A 12kg crate 3m off the ground.
An Olympic high jumper, with a mass of 82 kg, has a maximum gravitational potential energy of 1970 J. How high was the jump?
Let g = 9.8N/kg
24 m
161,540 m
2.5 m
201 m
On the pendulum shown, where is the potential energy the greatest?
A and D (highest positions)
B
C (lowest position)
The potential energy is the same at all positions
On the pendulum shown, where is the kinetic energy the greatest?
A and D (highest positions)
B
C (lowest position)
The kinetic energy is the same at all positions
A student turns on flashlight. What is the energy conservation that happen there?
chemical - light - electrical
electrical - chemical - light
chemical - electrical - light
light - chemical - electrical
A box is pushed by 20 N force to the right and displace for 0.1 m. What is the work done?
0.005 J
0.1 J
1 J
2 J
Initially, the box at rest. Then after applied by a force, it moves to 10 m/s. The mass of box is 5 kg. What is the work done of force?
25 J
250 J
500 J
750 J
Students are testing different materials to find the one that transfers the most heat energy. Identical containers, made of the different materials, were filled with hot water, and the temperature of the water was measured and recorded over time.
Based on the graph of the time and temperature data, which material was most effective at transferring thermal energy?
Material 1
Material 2
Material 3
Material 4
When ice cubes melt in a glass of water, a current forms in which heat energy moves from particles with a higher temperature to particles with a (a) temperature.
Four containers made of different materials, each containing water at 30C, were set out on a table. The initial temperature of the water was recorded. The temperature of the water was also recorded 15 minutes later. Which container was the most effective at preventing heat transfer from the water to the environment?
Four metal cubes, each at a different starting temperature, are placed in contact with each other. Which of the following describes the most likely flow of thermal energy in this situation?
Cube #4 to Cube #2
Cube #1 to Cube #2
Cube #3 to Cube #4
Cube #1 to Cube #3
The graph shows
positive acceleration
negative acceleration
constant acceleration
increasing acceleration
The graph shows
positive acceleration
negative acceleration
constant acceleration
increasing acceleration
The graph shows
positive acceleration
negative acceleration
constant acceleration
decreasing acceleration
positive acceleration
negative acceleration
slowing down
speeding up
positive velocity
Which runner stopped for a rest?
Albert
Bob
Charlie
None of them stopped
0-2 seconds using the distance vs. time graph.
A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?
A rightward force is applied to a dresser to accelerate it to the right across the bedroom floor.
A hockey puck glides to the right across the ice at a constant speed.
A downward-moving skydiver who has just opened the parachute is slowing down.
In a force diagram the size/length of the arrow tells you this about the force:
the strength of the force
the distance of the force
the direction of the force
Which way is the object moving?
it's either not moving or moving at a constant speed due to balanced forces
to the right
to the bottom
up
What is the NET FORCE of this diagram?
17 N, right
17 N, left
23 N, right
12 N, up
What is the net force?
40 N left
0 N Balanced
400 N right
40 N right
The astronaut floats in international space station. It proves that...
His weight is less in space
His mass is less in space
His weight does not change
His mass is more in space
If an object mass =30 kg on the Earth, what would be it's weight on Earth?
30 N
300 kg
3000N
300 N
If the mass of an object is 1000 kg on Earth, what is it's mass on the moon?
less than 1000 kg
more than 1000 kg
1000kg
If the weight of a body on the Earth's surface is 600 N, what would be it's weight in the space?
600 N
less than 600 N
more than 600 N
My weight on the Earth's surface is 500 N. What is my mass?
500 kg
500 g
50 kg
50 g
The gravitational attraction between two objects would increase if both masses are –
increased, and the distance between them is increased.
increased, and the distance between them is decreased.
decreased, and the distance between them is decreased.
decreased, and the distance between them is increased.
Why do planets orbit the Sun?
The Sun is the only celestial object that has a gravitational pull.
The Sun’s chemical composition makes it attract planets.
Only celestial bodies that emit light, like the Sun, can be at the center of an orbit.
The Sun is the most massive object in our solar system, so it exerts the greatest gravitational pull.
Which of the following would have the smallest gravitational attraction between the two masses?
In which example is the gravitational force of attraction between the two objects the greatest?
Example 1
Example 2
Example 3
Example 4
The momentum of an object depends upon the object's ___________&_____________.
size and shape
mass and speed
mass and velocity
mass and energy
Determine the momentum of 1000-kg car moving southward at 20 m/s.........
20000 Kg * m/s north
10000 kg * m/s north
20000 Kg * m/s south
10000 kg * m/s south
In order for an object to have momentum it must be ________
moving
motionless
asleep
If a 6.0 kg bowling ball is rolled with a velocity of 3.5 m/s, what is the momentum of the ball?
21 kg m/s
12 kg m/s
23 kg m/s
22 kg m/s
A 75 kg person walking around a corner bumped into an 80 kg person who was running around the same corner. The momentum of the 80 kg person
increased
decreased
remained the same
was conserved
Two skaters stand facing each other. One skater's mass is 60 kg, and the other's mass is 72 kg. If the skaters push away from each other without spinning,
the lighter skater has lees momentum
their momenta are equal but opposite
their total momentum doubles
their total momentum decreases
In a two-body collision,
momentum is always conserved
kinetic energy is always conserved
neither momentum nor kinetic energy is conserved
both momentum and kinetic energy are always conserved
The law of conservation of momentum states that
the total initial momentum of all objects interacting with one another usually equals the total final momentum
the total initial momentum of all objects interacting with one another does not equal the total final momentum
the total momentum of all objects interacting with one another is zero
the total momentum of all objects interacting with one another remains constant regardless of the nature of the forces between the objects
Two objects with different masses collide and bounce back after an elastic collision. Before the collision, the two objects were moving at velocities equal in magnitude but opposite in direction. After the collision,
the less massive object had gained momentum
the more massive object had gained momentum
both objects had the same momentum
both objects lost momentum
Two swimmers relax close together on air mattresses in a pool. One swimmer's mass is 48 kg, and the other's mass is 55 kg. If the swimmers push away from each other,
their total momentum triples
their momenta are equal but opposite
their total momentum doubles
their total momentum decreases
Which of the following best describes the momentum of two bodies after a two-body collision if the kinetic energy of the system is conserved?
must be less
must also be conserved
might also be conserved
is doubled in value
What is the force on a 1000 kg elevator that is falling freely at 9.8 m/sec2
102.04 n
9,800 n
980 n
103 n
