Balanced and Unbalanced Forces, Friction, and Gravity

The forces acting on this rocket are _________​.

• unbalanced and equal

• equal and opposite

• balanced and unequal

• unbalanced and unequal

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Mountain bikes have large knobby tires. What force helps the tires on uphill rides?

• gravity

• friction

• thrust

• drag

Tags

NGSS.MS-PS2-2

Two students pull on a rope in opposite directions with 80N of force. If the student on the right increased her pull to 100N, the rope would most likely

• go from motionless to leftward acceleration

• go from rightward acceleration to leftward acceleration

• go from motionless to rightward acceleration

• stay motionless

Tags

NGSS.MS-PS2-2

All objects acted on by gravity ALONE will fall at the same rate. What force will make an object fall faster or slower?

• air resistance caused by friction

• gravity

• mass

• weight

Tags

NGSS.MS-PS2-2

Which object has more air resistance?

• A flat piece of paper

• A crumpled piece of paper

Are the net forces balanced or unbalanced?  If they are unbalanced, which direction would the object move?

• Balanced

• Unbalanced, move left

• Unbalanced, move right

• Balanced, move right

Tags

NGSS.MS-PS2-2

Are the net forces balanced or unbalanced?  If they are unbalanced, which direction would the object move?

• Balanced

• Unbalanced, move left

• Unbalanced, move right

• Balanced, move right

Tags

NGSS.MS-PS2-2

If the airplane is flying forward, thrust overcomes drag.

• True

• False

Tags

NGSS.MS-PS2-2

What force pulls a roller coaster down the hill?

• Friction

• Gravity

• Magnetic

• Centifugal

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A toy fire truck rolled along a sidewalk and continued until it hit the wall of a building.  The firetruck had _________________ due to its mass.

• speed

• velocity

• inertia

• weight

Tags

NGSS.MS-PS2-2