Describing Force and Motion: Part 1 Quiz

Which of the following statements about force is NOT true?

• A force is a push or pull
• A force has size and direction
• A force is a change in motion
• A force can be shown as an arrow

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What is motion?

• a push or pull
• a change in position
• a law stated by Newton
• a change in velocity

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Two forces act on a bumper car as shown in the picture. what will MOST LIKELY be the direction of the change in motion?

• north
• east
• south
• west

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A change in motion results from forces that are

• equal
• opposite
• balanced
• unbalanced

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Balanced forces acting on an object will

• cause the object to change direction
• have no effect on the object's motion
• cause the object to accelerate
• cause the object to change speed

Two kids each kick a ball. Why might ball A accelerate faster than ball B?

• Ball A has more mass than ball B
• Ball A has the same mass as ball B
• Ball A had a greater force applied to it.
• Ball B had a greater force applied to it.

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NGSS.MS-PS2-2

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Friction

• causes an object's motion to speed up
• causes an object's motion to slow down

What force causes a roller coaster to go down a hill?

• inertia
• gravity
• friction

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Inertia is a force that

• causes an object to slow down
• keeps an object moving

A moving object continues to move at a constant velocity (speed and direction) unless an unbalanced force acts on it, according to Newton's

• 1st Law of motion
• second law of motion
• 3rd law of motion
• law of unbalanced forces