Force and Motion Review

What is the unit of measurement of force?

• Joule

• Newton

• Volt

• Watt

A force is a _________ or a ___________.

Tags

NGSS.MS-PS2-1

During a soccer game, a player strikes the ball with their foot. When this happens, the ball and the foot exert a force on each other. What reasoning explains why the ball accelerates away from the foot?

• The ball has less mass, so it exerts less force on the bat.

• The ball has less mass, so the equal force on the ball and the bat causes greater acceleration on the ball.

• The ball has greater velocity before the collision, so force affects the ball more than it affects the bat.

• The bat exerts more force than the ball because the batter is exerting a force on the bat as it hits the ball.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Susan measured the distances that a car traveled over 30 seconds. She wants to create a distance-time graph to show her data. Which of the following should Susan put on the horizontal axis?

• time

• speed

• velocity

• distance

Balanced forces will result in which of the following?

• An object coming to a stop.

• An object speeding up.

• No change in motion.

• An object slowing down.

Unbalanced forces will result in which of the following...

• An object coming to a stop.

• An object slowing down.

• An object speeding up.

• Any of the above are correct.

Tags

NGSS.MS-PS2-2

Friction can be increased by increasing which of the following?

• mass and speed

• mass and the roughness of the surface

• mass and height

• height and the roughness of the surface

The statements below describe four airplanes that have identical masses. Which airplane has the greatest amount of gravitational potential energy?

• an airplane traveling at 700 kilometers per hour (km/h) at an altitude of 3,000 meters

• an airplane traveling at 400 km/h at an altitude of 5,000 meters

• an airplane traveling at 600 km/h at an altitude of 5,000 meters

• an airplane traveling at 350 km/h at an altitude of 6,000 meters

Tags

NGSS.MS-PS3-2

Pat notices that the chain on herr bike is beginning to wear down and the bike is not operating as well as it used to. This observation is a time when which is true?

• Friction is good.

• Friction is bad.

• Friction has nothing to do with his bike chain.

• Pat is observing air resistance.

An ice skater moves back and forth on an ice rink. She speeds up on the straight portion of the rink. She slows down near each end of the rink and then turns around. Which claim supported by evidence?

• The skater only experiences acceleration when she is turning.

• The skater only experiences acceleration while skating in a straight line.

• The skater experiences acceleration both while skating in a straight line and while making her turn.

• Because the skater does not change her direction or speed, she does not experience acceleration.