Force and Motion Review

After throwing a basketball through the net, Anna observed the ball as it hit the ground. Which is most likely responsible for the ball hitting the ground?

• friction

• gravity

• mass

• speed

Chris climbs onto a skateboard ramp halfway between the top and the bottom of the ramp. Because gravity acts on Chris, which is most likely to happen?

• He won't move.

• He will roll up the ramp.

• He will roll down the ramp.

• He will float about the ramp.

How fast was a train moving if it traveled 100 meters in 10 seconds? (speed = distance / time)

• 1 meter per second

• 10 meters per second

• 90 meters per second

• 100 meters per second

A 30 gram ball rolls along a flat surface at a constant speed in the same direction over 4 meters in 20 seconds. Which is the speed of the ball? (speed = distance / time)

• 0.2 meters per second

• 0.5 meters per second

• 20 meters per second

• 80 meters per second

Jessica drives for 3 hours. She drives 50 miles per hour for the first hour, and 60 miles per hour for the remaining two hours. How far did Jessica travel? (speed = distance / time)

• 50 miles

• 60 miles

• 110 miles

• 170 miles

Below is a distance time graph that shows the motion of a student on a walk. Which statement best describes the students' motion?

• The student walks slowly at first, then increases their speed, stops, and very quickly returns to the starting point.

• The student walks up a hill at the beginning, and then has a flat surface, and then walks down a hill at the end.

• The student is going faster and faster in the last two minutes.

• The student starts out moving very fast, slows down in the middle of the walk, and then speeds up again at the end.

A student went on a walk, and kept track of their time and distance. The data is displayed in the graph. Which best describes the student's walk?

• The student went up a hill, and then down a hill.

• The student walked very quickly at the beginning of the walk, but then slowed down at the end.

• The student walked slowly at the beginning of the walk, and faster at the end.

• The student walked at a steady pace, and then returned to the starting point.

Macie's job at the bookstore requires her to move several heavy boxes of books. How can Macie use the least amount of force to move the boxes?

• by packing the books in larger boxes

• by packing the books in smaller boxes

• by stacking the boxes and pulling them out of the storage room

• by stacking the boxes and pushing them out of the storage room

Which item will require the most force to move?

• an empty wagon

• a wagon full of bricks

• a wagon full of apples

• a wagon full of feathers

How will the force needed to move an object be affected if the mass of the object changes from 100 kilograms to 200 kilograms?

• The force needed to move the object would be tripled.

• The force needed to move the object would be doubled.

• The force needed to move the object would remain the same.

• The force needed to move the object would be reduced by half.