Forces, Motion, and Fields Unit 1 2022/23

Which of the following is an action exerted on an object that may change the object's state of rest or motion?

• mass

• force

• velocity

• acceleration

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Which of these forces is being applied by the boy shown here?

• gravitational force

• fundamental force

• contact force

• field force

A metal ball sits motionless on a flat surface. Which of these would make the ball move?

• The force of gravity becomes less.

• The force of gravity becomes greater.

• Two equal horizontal opposing forces act upon the ball.

• Two unequal horizontal opposing forces act upon the ball.

Tags

NGSS.MS-PS2-2

A skydiver jumps out of a plane. She falls downward at a very fast speed. When she opens her parachute, she slows down. What force pulled the skydiver to the ground?

• friction

• gravity

• air resistance

• parachute pull

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A force can be a push or a pull.

• true

• false

What is the SI unit for force?

• gram

• pound

• newton

Forces can change both direction and speed of an object.

• true

• false

Tags

NGSS.MS-PS2-2

When a skater pushed off of a wall with her hand. The forces on the skater become balanced.

• true

• false

Tags

NGSS.MS-PS2-1

In a force diagram, the point of the arrow represents the direction of the force.

• true

• false

A fisherman steps off of a boat, which is in the water, onto a dock. What happens?

• The boat and dock do not move.

• The boat moves toward the dock.

• The boat moves away from the dock.

• The dock moves away from the boat.

Tags

NGSS.MS-PS2-1