Newton's First and Second Laws - Review

Front

What is Newton's First Law of Motion?

Back

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 a net external force.

Front

What is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This is expressed as F = m*a.

Front

What is the formula for calculating force?

Back

F = m*a, where F is force, m is mass, and a is acceleration.

Front

What unit is force measured in?

Back

Newtons (N).

Front

If the mass of an object is doubled, what happens to the force required to achieve the same acceleration?

Back

The force required is also doubled.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What happens to the acceleration of an object if the net force acting on it is increased?

Back

The acceleration of the object also increases.

Front

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

Back

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

Front

What is an example of Newton's First Law in everyday life?

Back

A passenger lurches forward in a car when the driver suddenly brakes.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.