Forces Review

An object's resistance to its change in motion is its

• friction

• inertia

• gravity

• pressure

As the force applied to an object increases, its acceleration

• decreases

• increases

• stays the same

• does not exist

Tags

NGSS.MS-PS2-2

A 20 kg bike accelerates at 10 m/s². what was the force?

• 2 Newtons

• 20 Newtons

• 200 Newtons

• 10 Newtons

Tags

NGSS.MS-PS2-2

If you go to the moon ...

• your mass changes, but your weight stays the same

• your weight changes, but your mass stays the same

• both your mass and weight change

• both your weight and mass stay the same

Which is an example of an action-at-a-distance force?

• gravity

• tension

• friction

• normal

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which type of force opposes the motion of an object?

• gravitational force

• normal force

• tension force

• friction force

What is the net force on this object?

• 80 N West

• 80 N East

• 40 N West

• 40 N East

Tags

NGSS.MS-PS2-2

Why does a book on a table not move?

• No forces are acting on the book
• Gravity is the only force acting on the book
• Forces of the table pushing up and gravity pulling down are balanced

What is the coefficient of static friction if it takes 44 N of force to move a box that weighs 86 N? 

• 0.78
• 0.51
• 0.78 N
• 0.58 N

Tags

NGSS.HS-PS2-1

Normal force is

• Always opposite the weight

• Always parallel and down the incline

• Always perpendicular to the surface

• It depends on the direction of motion