Force and Motion Unit Review

Front

Which investigation will best test the effects of gravity on moving objects? Options: pencils falling from the same height, balloons floating upward from the same height, a bicycle speeding up on a flat surface, a ball slowing down on a flat surface

Back

pencils falling from the same height

Front

A man is pushing a ball up a hill. If the man stops pushing the ball and steps out of the way, what will most likely happen to the ball?

Back

It will roll down the hill.

Front

Which best describes the role friction plays in the operation of a car? Options: Friction makes a car go faster. Friction keeps a car from stopping. Friction turns the car in a new direction. Friction helps a car slow down and stop.

Back

Friction helps a car slow down and stop.

Front

Carey left a bowling ball and kickball outside on a windy day. Which best explains why the kickball moved but the bowling ball did not?

Back

The kickball has less mass so it was easier to move.

Front

A helicopter traveled 200 miles in one hour. During the next hour, it traveled another 200 miles. Which best describes the average speed of the helicopter during the second hour?

Back

exactly the same as the first hour

Front

A news truck traveled 60 miles in one hour on Thursday and 240 miles in four hours on Friday. Which best describes the average speed of the truck? (speed = distance ÷ time)

Back

The truck drove the same speed on both days.

Front

Michelle drove 300 miles in 6 hours. What was Michelle’s speed?
(speed = distance ÷ time)

Back

50 miles per hour

Front

Four solid balls, each with a different mass, are moving at the same speed. Which ball would require the most force to stop its motion? Options: ball with a mass of 5 kg, ball with a mass of 10 kg, ball with a mass of 15 kg, ball with a mass of 20 kg

Back

ball with a mass of 20 kg

Front

Which best describes the speed of a ball as it is thrown straight up into the air and comes back down?

Back

The ball goes slower and slower as it goes up, stops, and then goes faster and faster as it comes down.

Front

What is the best way to determine which student used the most force to push a large, heavy ball? Options: compare the sizes of the students, compare the ages of the students, compare the distances that the ball rolled, compare the number of times the ball was rolled

Back

compare the distances that the ball rolled