Physics in Motion- Newton's 3rd Law

What does Newton's Third Law of Motion state about forces?

• Forces always act in the same direction.

• For every action, there is an equal and opposite reaction.

• An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

An arrow with a mass of 0.10 kg is launched with an average acceleration of 1280 m/s². If the bow has a mass of 4 kg, what is the magnitude of the bow's acceleration in the opposite direction?

• 128 m/s²

• 320 m/s²

• 32.0 m/s²

• 12.8 m/s²

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When a skydiver falls towards Earth, why does the skydiver accelerate significantly more than the Earth, even though the force between them is equal in magnitude?

• The skydiver experiences less air resistance than the Earth.

• The Earth's gravitational pull is stronger on the skydiver.

• The Earth has a much greater mass than the skydiver.

• The skydiver is moving at a higher velocity.

Which of the following is an example of an action-reaction pair as described by Newton's Third Law?

• A car accelerating forward due to the engine's power.

• A book resting on a table, with gravity pulling it down.

• A swimmer pushing water backward, and the water pushing the swimmer forward.

• A ball rolling down a ramp due to gravity.