Laws of Motion

What does the first law of motion, also known as the law of inertia, state about an object at rest?

• It will decrease its speed gradually

• It will eventually move on its own

• It will remain at rest unless acted upon by an external force

• It will move at a constant velocity

Why does a bike require less force to move forward compared to a car?

• Because bikes have larger wheels

• Because cars are always slower

• Because a bike is lighter than a car

• Because a bike is usually faster

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NGSS.MS-PS2-2

What happens according to Newton's third law when you throw a ball against a wall?

• The wall breaks

• The wall moves

• The ball stops

• The ball bounces back

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What does 'force' refer to in the context of Newton's laws?

• The color of an object

• The weight of an object

• A push or pull that can change an object's motion or shape

• The speed of an object

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NGSS.MS-PS2-2

What is acceleration?

• A decrease in speed

• A type of force

• An increase or decrease in the speed of an object

• The shape of an object