Force and Motion Review 1

Force and Motion Review

Multiple Choice

Four boxes are lifted straight up from the ground to a shelf. Each box has a different mass, as shown in the table. Which box requires the smallest force to lift it off the ground?

• L

• M

• N

• O

Multiple Choice

A student puts a penny, a box of crayons, and a bag filled with books on a table. Which statement describes the gravitational force acting on the objects?

• The penny experiences the least amount of gravitational force.

• All of the objects experience the same amount of gravitational force.

• The box of crayons experiences the greatest amount of gravitational force.

• The bag filled with books experiences the least amount of gravitational force.

Multiple Choice

Which list shows what can happen to the motion of an object when only one force is acting on the object?

• the object speeds up, slows down, sits at rest

• the object changes direction, speeds up, slows down

• the object moves at a constant speed, speeds up, slows down

• the object moves at a constant speed, changes direction, speeds up

Multiple Select

A student stacks books on a skateboard and pushes it down a hall. Choose all of the changes the student could make that would result in the skateboard reaching the end of the hall faster.

• Push the skateboard with less force.

• Push the skateboard with a greater force.

• Remove some of the books.

• Stand the books upright.

• Replace the books with heavier objects.

Multiple Choice

Two students are pushing blocks of different masses (weights) along the floor. They start the blocks at the same position and time and try to push them so that each block gets to the same finish position at the same time. The length of the arrow represents the amount of force used to push the block. Which diagram correctly shows the correct amount of force applied to the blocks so that the blocks will get to the finish position at the same time?

Multiple Choice

A student applies a constant force to the pedals of a bicycle to travel at a constant speed on a calm day. Suddenly, a strong gust of wind blows straight toward the front of the student. Which statement describes the motion of the student on the bicycle immediately after the wind started to blow, if the student continues to apply the same constant force to the pedals?

• The motion sped up.

• The motion reversed.

• The motion slowed down.

• The motion remained constant.

Multiple Choice

A group of students places two identical carts on a flat surface. One cart is empty and the other cart is full of blocks. The students push the carts across the surface. Each student pushes with the same force for the same amount of time. Which cart will speed up the most?

• the full cart pushed by one student

• the full cart pushed by two students

• the empty cart pushed by one student

• the empty cart pushed by two students

Multiple Choice

A teacher is pushing a cart filled with books down a hallway with a wooden floor. Which change would help the teacher move the cart more easily?

• putting fewer books in the cart

• removing the wheels from the cart

• carrying the cart instead of rolling it

• laying carpet over the wooden floor

Multiple Select

Students set up an experiment with different small objects and a tabletop covered in ice so that friction is not a factor. The students give each object a short push to start it moving across the top of the table and record the resulting speed of each object. Select the two factors that have the greatest effect on the speed of the objects.

• force of the push

• shape of the object

• length of the tabletop

• mass/weight of the object

• time the object was sliding

Multiple Choice

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?

• length of the ramp

• slope of the ramp

• mass of the cars

• volume of the cars