Unit Exam --- forces and newton's laws

Front

The tendency of an object to resist any change in its motion is called ___

Back

Inertia

Front

Which statement describes friction?

Back

A force that acts to resist motion

Front

The coefficient of static friction describes what?

Back

How easily an object will slide across the surface

Front

An 1800kg car has an acceleration of 3.8m/s². If you are calculating the force acting on the car, what units will your answer have?

Back

Newtons

Front

The diagram shows the forces acting on an object moving in the leftward direction. Which statement is true?

Back

The object is speeding up

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 unless acted upon by a net external force.

Front

What is the formula for calculating force?

Back

Force = mass × acceleration (F = ma)

Front

What does the term 'net force' refer to?

Back

The overall force acting on an object after all the forces are combined.

Front

What is the role of friction in motion?

Back

Friction opposes the motion of an object, slowing it down or preventing it from moving.

Front

What is the difference between static and kinetic friction?

Back

Static friction acts on objects that are not moving, while kinetic friction acts on objects that are sliding past each other.