Force & Motion

A ball is moving in a certain direction.  What would happen to the ball if a greater force was applied on the ball along its direction of motion?

• The speed of the ball would decrease.
• The speed of the ball would increase.
• The ball will stop instantly.
• The ball will change direction.

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Why does a rolling ball stop?

• Gravity
• Friction
• Waterfalls
• Sand

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If two boys are pulling with the same amount of force. What will happen?

• The boy in blue will win.

• They will not move at all.

• The boy in red will win.

• Both will fall down.

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NGSS.MS-PS2-1

A _____________________ must be exerted on an object at rest to cause it to move.

• weight
• inertia
• force
• gravity

On which surface will a toy car travel the furthest?

• Carpet
• Polished Wood
• Ice

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NGSS.MS-PS2-2

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

What is a PUSH or PULL of an object?

• Motion
• Force
• Friction
• Gravity

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What pulls a ball back to earth?

• Gas
• Gravity
• Friction
• Molecules

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An object may move when a _______ is applied to it. 

• force
• gravity
• friction
• speed

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Is gravity a push or a pull?

• push
• pull
• neither
• both

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