Forces and Newton's First Law

What is the weight of a 6 kg object?

• 50 N

• 60 N

• 0.6 N

• 100 N

Tags

NGSS.MS-PS2-4

An object maintains its motion when there is a zero net force acting on it because it has

• inertia

• velocity

• weight

• speed

Which has no change in its state of motion? An object

• moving at a constant velocity

• at rest

• in equilibrium

• all of these

A sheet of paper can be withdrawn from under a milk carton without toppling it if the paper is jerked away quickly. This best demonstrates that

• there is no gravity

• the milk carton has inertia

• the milk carton has no acceleration

• the milk is glued to the table

An object is pulled up with a force of 10 N and down with a force of 15 N. What is the net force?

• 25 N up

• 5 N up

• 5 N down

• 0 N

Tags

NGSS.MS-PS2-2

Which of the following has the most inertia?

• 400,000 kg jet about to take off

• 75 kg teacher sitting at desk

• 11 kg child running in a circle

• 100 kg crate sliding across the floor

Tags

NGSS.MS-PS2-2

Force is a vector quantity because it has

• magnitude and speed

• magnitude and direction

• mass and acceleration

• speed and direction

If you push horizontally on a crate with a force of 100 N, and it slides at a constant velocity, what is the force of friction between the crate and the floor?

• unknown

• less than 100 N

• more than 100 N

• 100 N

Tags

NGSS.MS-PS2-2

Friction is a force that

• opposes the motion of an object

• cannot be changed

• acts independent of motion

• has no effect on motion

What is the normal force on an 8 N book at rest on a table?

• 0 N

• 16 N

• 2 N

• 8 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4