17. The farther you are from Earth, the gravitational force is ____. *
1 point
A. weaker
B. stronger
C. neutralized
D. stable
18. A peso coin and a feather are dropped at the same time from the same height. What will happen? *
1 point
A. The peso coin will land first.
B. The feather will land immediately.
C. The peso coin will float slowly through the air.
D. The peso coin and the feather will land at the same time.
19. How does the mass of an object affect the gravitational force? *
1 point
A. The bigger the mass of an object, the greater is the gravitational force.
B. The bigger the mass of an object, the lesser is the gravitational force.
C. The smaller the mass of an object, the greater is the gravitational force.
D. The smaller the mass of an object, there is more gravitational force
20. Which statement is incorrect about gravity? *
1 point
A. The lighter the object, the faster it falls to the ground.
B. The speed of falling objects is affected by Earth’s air resistance.
C. The more distant an object is to Earth, the lesser gravitational force is acted on it.
D. The heavier the object, the slower it falls to the ground.
21. The faster an object moves, the ________ kinetic energy it has. *
1 point
A. more
B. less
C. none of the above
D. all of the above
22. What kind of energy is in a waving hand? *
1 point
A. Potential
B. Kinetic
C. Light
D. Mechanical
23. Which of the following is NOT true about Potential Energy? *
1 point
A. An object's position affects its potential energy
B. Potential energy is Stored energy
C. Potential energy only occurs when an object is in motion
D. All objects have potential energy
24. If the skier is at the top of the hill waiting for the whistle to blow for his turn to ski, he has ____________, after the whistle blows and he starts his ski run, he has ___________ . *
1 point
A. kinetic energy; potential energy
B. potential energy; friction
C. kinetic energy; gravity
D. potential energy; kinetic energy
25. What would have the greatest kinetic energy? *
1 point
A. A car driving down a hill.
B. A person running down a hill.
C. A ball rolling down a hill.
D. A marble rolling down a hill.
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