What is the law of Inertial say?

• An object will accelerate unless a force is applied.
• An object will change direction only if a force is applied.
• An object will remain in motion only if it is in a vacuum.
• An object will remain at rest or in uniform motion unless acted upon by an external force.

What is the newton's second law say?

• Force equals velocity divided by time (F = v/t).
• Mass is the only factor affecting force.
• Acceleration is independent of mass and force.
• Force equals mass times acceleration (F = ma).

Give me a example of Action and Reaction.

• Clapping hands (action) and the sound echoing in silence (reaction).
• Throwing a ball (action) and the ball disappearing (reaction).
• Pushing a wall (action) and the wall pushing back (reaction).
• Jumping off a diving board (action) and hitting the water (reaction).

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