Quiz 3 Prep

What is Newton's First Law?

Answer explanation

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 an unbalanced force.

What is Newton's Second Law?

Answer explanation

a = Fnet/m

Fnet = ma

m = Fnet/a

What is Newton's Third Law?

Answer explanation

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

What measure is most similar to inertia?

• Acceleration

• Density

• Mass

• Velocity

An air hockey puck is hit on an infinitely large hockey table. If we ignore friction, What would happen to the hockey puck?

• It would keep going in the same direction and speed.

• It would slow down in the same direction.

• It would speed up in the same direction.

• It would change direction over time with the same speed.

Which of the following scenarios have balanced forces?

• The object is motionless.

• The object has constant velocity.

• The object is accelerating.

An astronaut goes to the moon, which value changes?

• Mass

• Weight

A 500g mass sits on Ms. Dee's desk. How much force does the desk exert on the mass?

What type of force does the desk exert on the mass?

The weight of an object is 742 N. What is the mass in kilograms?