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WorksheetsCSA #2 REVIEW
Total questions: 15
Worksheet time: 8mins
The Head of a hammer is often made of steel. This makes the head heavy, which helps create a strong force for driving nails. Which statement BEST represents why the head of the hammer must be strong to resist what force?
The force of gravity pulling down on the hammer.
The force of the air resistance on the moving hammer.
The force of the nail pushing in the opposite direction.
The force of the person using the hammer.
All moving objects have energy, including the car that Gillan is currently driving on the freeway. Which type of energy does the car have?
Potential energy
Gravitational Potential energy
kinetic energy
chemical energy
A poster hanging on the wall doesn't move. What is the BEST reason the poster doesn't move?
Inertia and balanced forces
Force, mass, and acceleration
Unbalanced forces
Equal but opposite reaction.
According to Newton's Third Law, if someone jumps off a skateboard, the skateboard will roll backwards because FILL IN THE BLANK .
the mass of the skateboard is the same as the mass of the person jumping off.
the air resistance on the person is great and the friction on the skateboard is small.
the pull of gravity on the person is the same as the skateboard, regardless of size.
for the force that sent the person forward, there is an equal force pushing back on the skateboard.
Chuck does a high jump from a stationary position. Which of the following statements BEST describes the forces involved in Chuck's push off from the ground?
Chuck's feet are pushing more on the ground than the ground is pushing up on him, resulting in his moving away from the ground.
the force of Chuck's feet downward into the ground is equal in magnitude to the force of the ground pushing up on Chuck's feet.
Chuck's feet are pushing on the ground but the ground does not push back, resulting in Chuck moving away from the Earth.
The ground is pushing up on Chuck's feet more than Chuck's feet are pushing down on the ground, resulting in Chuck accelerating upwards.
Which of the following has the GREATEST kinetic energy?
a 20 kg ball traveling at 4 m/s
a 20 kg lead pipe traveling at 6 m/s
a 20 kg stone traveling at 10 m/s
a 20 kg pillow traveling at 2 m/s
A graph showing the kinetic energy and speed of a moving object is provided. Which of the following can be concluded from the graph?
Kinetic energy increases as speed increases.
Kinetic energy only changes when the speed changes.
Speed is only related to the size of an object.
All moving objects have the same kinetic energy.
An object moving at constant velocity and an object at rest have the same kind of forces acting on them. Which of the following statements BEST explains why both objects have the same kind of forces acting on them?
The object that is moving was at one time at rest.
The motion on both objects is not changing.
The object that is at rest could be made to move.
The motion of the object depends on how a person looks at the object.
A graph showing the kinetic energy of a 10 kg object at different speeds is provided. Based on the information in the graph, we can predict that the kinetic energy of the object at 2m/s would be FILL IN THE BLANK.
44 joules
20 joules
38 joules
12 joules
Equal forces are applied to two toy cars on a smooth level surface. Car 2 has a mass twice as great as that of Car 1. What is the approximate acceleration of Car 2 relative to Car 1.
It is one quarter as great
It is half as great.
It is twice as great
It is four times as great.
A graph showing the kinetic energy and mass of objects traveling at 10 m/s is shown. In order for an object moving at 10 m/s to have a kinetic energy of 1800 joules, the object must have a mass in the range of FILL IN THE BLANK.
0-10 kg
20-30 kg
30-40 kg
10-20 kg
Two students conduct an investigation to test changes to an object's motion. One student pulls a wagon so that it's acceleration is constant. Another student removes an object that has a large mass from the wagon.
If the first student continues to pull with the same amount of force, what happens to the acceleration of the wagon?
Which statement BEST answers this question?
The magnitude of the acceleration decreases.
The acceleration changes direction but not magnitude.
The magnitude and direction of acceleration stay the same.
The magnitude of the acceleration increases.
A student creates a ramp by stacking four blocks and then leaning a meter stick against it. She releases four different balls from the same position on the ramp and calculates their speed.
Based on the information in the table above, which ball would you predict to have the LEAST kinetic energy when it reaches the end of the ramp?
Softball
Baseball
Golf ball
Tennis Ball
Select the answer that BEST completes the sentence.
For a rocket on the ground to change its velocity in an upward direction, it must FILL IN THE BLANK.
apply an unbalanced force
apply a balanced force
reduce friction
reduce its mass
SELECT 2 CORRECT ANSWERS. More than one answer is correct.
Four basic forces act on an airplane while in flight: lift, weight, drag, and thrust. These four forces and their directions are indicated in the picture.
A particular airplane is flying at a constant height above the ground and the forces of thrust and drag acting on the flying airplane are EQUALLY strong.
Which of the following TWO statements must be true about this airplane?
The airplane is changing direction.
The airplane is moving forward.
The airplane is accelerating forward
The airplane is slowing down.
The airplane is flying at a constant speed.
