Unit 7 Test- Forces & Motion

Law of Action/Reaction

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

Law of Inertia

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

Law of F = ma

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

Compare to your weight and mass on Earth to if you were on the moon (1/16th the gravity)

• your weight would be less, but mass would remain the same

• your weight and mass would both be less

• your weight would increase, but your mass would remain the same

• your weight would remain the same, but your mass would decrease

A 0.15 kg baseball and a 7.25 kg bowling ball are both rolling down the same hill. Which object is easier to stop and why?

• the bowling ball because it has less inertia

• the baseball because it has less inertia

• the baseball because it has more inertia

• the bowling ball because it has more inertia

If you exert a net force on a box, the box will

• accelerate

• have no motion

• have no change in speed

Seatbelts in cars help the passengers by

• adding to their acceleration in sudden starts

• keeping them out of the way of the driver

• stopping their forward motion by giving an outside force

The outside force that causes most objects to slow down to a stop is

• gravity

• inertia

• friction

The following word define objects in motion stays in motion unless acted on by unbalanced forces:

• gravity

• inertia

• explosion

• friction

In order for ones mass to change they must:

• travel to another planet

• live on the moon for an extended amount of time

• mass does not change regardless of location