Gravity and Friction

Front

Lilly has a flat piece of paper and a ball of paper. She drops both papers at the same time from the same height. The ball of paper hits the ground first. Which force acts on the flat piece of paper that slows it down?

Back

gravity

Front

Two people need to move a large, heavy box. One person pushes the box, while the other person pulls the box. Which way of moving the box makes the work easiest for the people?

Back

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

What will most likely happen to a ball if a man stops pushing it up a hill and steps out of the way?

Back

It will roll down the hill.

Front

How would the absence of friction affect a marble traveling on a long, straight path?

Back

The marble would remain at constant speed.

Front

Why is it important for basketball players to wear shoes with tread when playing?

Back

to increase friction between the floor and the player’s feet

Front

Which force causes a ball to continue rolling down a hill?

Back

gravity

Front

Why did the car roll down the wood ramp the fastest? Options: There was more force applied to the car on the wood ramp. There was less friction on the surface of the wood ramp. The wood ramp was higher than the other ramps. The car on the wood ramp had more mass.

Back

There was less friction on the surface of the wood ramp.

Front

What eventually causes a ball to slow and stop when kicked and rolling across a field?

Back

friction

Front

Which is a force that keeps Earth in orbit around the Sun? friction, gravity, radiation, magnetism

Back

gravity