Applying Newton's Laws of Motion

Two astronauts are playing catch in space. The first astronaut throws the ball; and

• the ball moves, but the astronaut doesn’t.

• the ball moves, and so does the astronaut.

• the ball doesn’t move, but the astronaut does.

• the ball doesn’t move, and neither does the astronaut.

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A 10 kg mass is dropped from a tall rooftop and accelerates at 9.8 m/s². What is the weight of the dropped object?

• 0 N

• 9.8 N

• 98 N

• 198 N

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What is Newton's First Law

• F=ma

• Every action has an equal and opposite reaction

• An object at rest stays at rest, an object in motion stays in motion.

• Friction

Which force produces a change in motion?

• unbalanced force
• balanced force
• gravitational force
• frictional force

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What law of motion does this picture represent?

• Newtons 1st law
• Newtons 4th law 
• Newtons 3rd law 
• Newtons 2nd law

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Which statement best explains Newton's Third Law of Motion?

• An object at rest tends to stay at rest.
• For every action there is an equal and opposite reaction.
• The acceleration of an object is based on the force applied.
• An object continues its motion until an unbalanced force is applied.

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A student throws a ball against a wall.  Which statement best explains what is happening in the picture.

• The energy of the ball is destroyed as it strikes the wall.
• The energy of the ball becomes negative as it hits the wall.
• The force from the wall on the ball is equal and opposite to the force from the ball on the wall.
• The force exerted by the ball on the wall is greater than the force exerted by the wall on the ball.

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If a 6 kg bowling ball is thrown with 28 N of force, how fast will it accelerate?

• 4.67 m/s²
• 0.21 m/s²
• 168 m/s²

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Newton's Law of Inertia describes the motion of-

• Objects at rest only
• Objects in motion only
• Objects at rest and objects that are in motion
• Objects without a mass and resist being set into motion

What happens when two objects, such as a baseball and a bat, collide?

• They hit each other with the same force in the same direction.

• They hit each other with the same force in opposite directions.

• One remains still while the other one moves in the same direction.

• They hit each other with unequal force in opposite directions.

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