Forces and Motion

When you slide a box across the floor, what force does your push have to be greater than in order for there to be emotion.

• Normal force

• Gravitational force

• Air resistance force

• Frictional force

Tags

NGSS.MS-PS2-2

What makes a good reference point?

• Something that is in constant motion

• Something that is acceleration

• Something that is stationary (not moving)

• Something that is decelerating

What causes a change in an object's motion?

• Balanced forces

• Acceleration

• Unbalanced forces

Tags

NGSS.MS-PS2-2

In the picture, what force is acting upward on the skydiver?

• Gravity

• Air resistance

Tags

NGSS.MS-PS2-2

In the picture, what force is acting downward on the skydiver?

• Gravity

• Air resistance

Tags

NGSS.MS-PS2-4

A cyclist rides north past an old man sitting on a bench. What direction will the cyclist see the old man moving? Assume that the old man is sitting still.

• North

• South

• East

• West

• The old man will not appear to be moving

What would be a good reference point to describe the motion of the Earth within our solar system?

• The sun

• The Earth

• The mountains on Earth

• The Milky Way

Tags

NGSS.MS-ESS1-1

Select all of the at-a-distance forces.

• Gravity

• Electric charges

• Magnetism

• Friction

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-3

What is the Net Force on the box shown below?

• 12N upward

• 12N downward

• 23N to the right

• 17N to the left

• 17N to the right

Tags

NGSS.MS-PS2-2

What is the Net Force on the box shown below?

• 100N upward

• 150N left

• 0N

Tags

NGSS.MS-PS2-2