Newton's Laws of Motion

Front

What is the resultant force?

Back

The resultant force is the overall force acting on an object when all individual forces are combined. It determines the object's acceleration and direction of motion.

Front

When an object is moving, friction acts in the _______ direction as the motion.

Back

opposite

Front

A car has a mass of 10,000 kg. What is the WEIGHT of the car? (Use 10 N/kg as the value of gfs)

Back

100,000 N

Front

A person would weigh less on the Moon than on the Earth because...

Back

Moon has less mass and therefore less gravity.

Front

Which is the correct formula for weight?

Back

mass x gravitational field strength = weight.

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 at a constant velocity 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 (F = ma).

Front

What is Newton's Third Law of Motion?

Back

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

Front

Define gravitational field strength.

Back

Gravitational field strength is the force of gravity acting on a unit mass at a point in a gravitational field, measured in N/kg.

Front

What is the formula for calculating weight?

Back

Weight = mass x gravitational field strength.