What is one example of all three of Newton's Laws?

Answer 1

1 Object will stay in motion at a constant speed, or stay at rest unless acted upon an external force

2 F = ma

3 For every action there is an equal and opposite reaction ie forces come in pairs

One example of all three? Perhaps a tennis ball approaching a racquet at constant speed (1) due to one player hitting it with a force (F = ma); it then changes direction as the second player hits it (1) and the player feels the impact of the ball on the racquet (3) as he or she hits it back again.

Answer 2

An example of all three of Newton's Laws is a rocket launching into space. The first law (inertia) is demonstrated when the rocket remains at rest until a force is applied to launch it. The second law (acceleration is proportional to force) is shown as the rocket's engines provide a force to accelerate it. The third law (action-reaction) is exemplified when the rocket pushes exhaust gases downwards, causing an equal and opposite reaction that propels the rocket upwards.