IPC - Forces and Friction

A(n) __________ is a push or a pull that one body exerts on another.

• acceleration

• force

• motion

• velocity

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The __________ is the combination of all the forces acting on an object.

• direction of motion

• force pair

• inertia

• net force

Tags

NGSS.MS-PS2-2

Forces that cancel each other are called __________ forces.

• balanced

• inactivated

• neutral

• null

Which best demonstrates friction?

• an ice-skater sliding across the ice without noticeably slowing down

• a car rolling to a stop at a traffic light

• a baseball moving in a projectile motion

• the free fall of astronauts in orbit

Tags

NGSS.MS-PS2-2

A snow skier slowing to a stop after skiing down a mountain demonstrates __________ friction.

• air

• rolling

• sliding

• static

Static friction occurs when two objects in contact with each other are __________ relative to each other.

• moving

• at rest

• colliding

• rolling

What is the unit used for Force?

• Joule

• Velocity

• Newton

• Acceleration

Someone pulls on a box with 50N of force and another person opposite pulls on the same box with 50N of force. Does the box move?

• Yes

• No

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which way would the arrow for air resistance go?

• Up

• Down

• Left

• Right

What is the net force?

• 20 N

• 0 N

• 400 N

• 40 N