Force and Friction

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

Front

Which best describes the force required to carry Lori Lynn's loaded book bag home?

Back

It took a greater amount of force to carry the loaded book bag home.

Front

How does friction affect speed?

Back

More friction decreases speed.

Front

Why did the car travel the same distance in a shorter amount of time?

Back

The car had less mass and traveled at a faster speed than the truck.

Front

Which of the following would increase the motion of a ball after it is kicked? a high, grassy surface, a surface sloped uphill, a surface sloped downhill

Back

a surface sloped downhill

Front

Two toy race cars are going to be raced down the same ramp. Which information is most helpful in predicting which car will win the race? Options: length of the ramp, volume of the cars, slope of the ramp, mass of the cars

Back

mass of the cars

Front

Why are new tires on a car better than older, worn tires? Options: New tires have less mass than older tires., New tires are less affected by gravity than older tires., New tires allow the car to travel faster than older tires., New tires provide more friction on the road than older tires.

Back

New tires provide more friction on the road than older tires.

Front

Which best describes the force of gravity?

Back

a pulling force

Front

Alan and Alexis are kicking a ball back and forth. Alan kicks the ball in Alexis’ direction, but the ball stops just before it reaches Alexis. Which most likely caused the ball to stop? Options: friction, gravity, change in mass of the ball, change in shape of the ball

Back

friction

Front

A person is pushing a lawnmower. Which best describes what is occurring?

Back

Force is being applied to the lawnmower.