Newton's Laws

Front

What is the unit of momentum?

Back

kg*m/sec

Front

What does Newton's 1st Law state?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What does Newton's 2nd Law state?

Back

Force equals mass times acceleration (F = m*a).

Front

What does Newton's 3rd Law state?

Back

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

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

If a 10 kg object is accelerating at 5 m/sec², what is the force acting on it?

Back

50 Newtons (F = m*a = 10 kg * 5 m/sec²).

Front

What is the relationship between mass and acceleration in Newton's 2nd Law?

Back

As mass increases, acceleration decreases if the force is constant.

Front

What is an action force?

Back

The initial force exerted by one object on another.

Front

What is a reaction force?

Back

The force exerted by the second object back on the first object.

Front

Give an example of Newton's 1st Law in everyday life.

Back

A book resting on a table will remain at rest until someone pushes it.