Chapter 2 practice test

Front

What is the basic unit for measuring force in the metric system?

Back

Newtons

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 is an example of harmful friction?

Back

Engine parts wearing out.

Front

What law is demonstrated when a bowling ball continues to roll until it hits the pins?

Back

Newton's 1st law.

Front

What does Newton's 2nd law state?

Back

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

Front

How does mass affect the force required to accelerate an object?

Back

Greater mass requires more force to achieve the same acceleration.

Front

What is the formula for calculating force?

Back

Force = mass × acceleration (F = ma).

Front

What is an example of Newton's 2nd law in everyday life?

Back

A larger truck requires more force to accelerate than a smaller car.

Front

What is the difference between static and kinetic friction?

Back

Static friction acts on objects at rest, while kinetic friction acts on moving objects.

Front

What is the role of friction in motion?

Back

Friction opposes the motion of objects and can cause them to slow down or stop.