1. Which of the following statement is true?
A. Friction makes an object circle
B. Gravity pushes an object upward
C. Force is needed to stop an object
D. An object in motion will remain in motion
2. A boy sits on a grassy slope. What force stops him sliding down?
A. Friction
B. Magnetic
C. Gravity
D. Weight
3. What makes a rolling ball slow down and stop?
A. Air resistance
B. Brake
C. Friction
D. Gravity
4. Which surface will produce the least amount of friction?
A. fuzzy soccer field
B. gravel running track
C. smooth glass table top
D. grassy soccer field
5. Which of the following does not involve any friction?
A. a bicycle rolling down a hill
B. a baseball player sliding into second base
C. a girl waving her hands
D. all of the above experience friction
6. How is brake useful?
A. It uses friction to make vehicle to move faster.
B. It slows down a moving vehicle
C. It moves the vehicle in any direction.
D. It moves the vehicle safely.
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Answer:
1.B
2.A
3.C
4.C
5.C
6.B
Explanation:
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Answer:
1.c
2.a
3.d
4c
5d
6b
Explanation:
hope it helps.