Force and Motion Test

Front

What is a force?

Back

A force is a push or pull that can cause an object to move, stop, or change direction.

Front

What units are used to measure force?

Back

The unit used to measure force is Newtons (N).

Front

What happens when two equal forces act in opposite directions on an object?

Back

The object does not accelerate because the forces are balanced.

Front

What is Newton's 1st law of motion?

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 Newton's 2nd 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.

Front

What is Newton's 3rd law of motion?

Back

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

Front

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

Back

The greater the mass of an object, the more force is needed to accelerate it.

Front

What is inertia?

Back

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

Front

What is the relationship between force, mass, and acceleration?

Back

Force = Mass x Acceleration (F = m x a).

Front

What is an example of friction?

Back

Friction is the force that opposes the motion of an object, like when you try to slide a book across a table.