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Forces and Motion Investigation

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Forces and Motion Investigation

Read the investigation and examine the data table. Answer each question using evidence about pushes, pulls, motion, and friction.

Investigation: Which surface slows a toy car most?

Owen tested the same toy car on a level track. She gave it the same gentle push each time, then measured how far it rolled before stopping. The track was reset between trials.

Surface

Trial 1 distance (cm)

Trial 2 distance (cm)

Smooth tile

180

176

Cardboard

132

128

Rough fabric

1.What is a force? Choose the best definition.

A push or pull that can change an object's motion
The amount of space an object takes up
A material's color
The distance between two places

2.Use the table. On which surface did the car travel the farthest on average? Give the two trial distances as evidence.

3.Which surface exerted the greatest friction on the moving car? Explain how the data support your answer.

4.True or false: If the forward push on a moving car and the backward friction force are equal, the car's motion does not change.

TrueFalse

5.During a test, a student pushes a cart forward with 9 newtons of force while friction pushes backward with 4 newtons. What is the net force, and in which direction will the cart accelerate?

6.Fill in the blank: Friction acts between surfaces that touch and usually acts the direction an object is sliding.

7.Fill in the blank: On rough fabric, friction makes the toy car stop than on smooth tile.

8.The two trials on each surface gave slightly different distances. Give one reasonable reason for this difference, even though Owen tried to use the same push.

9.Owen wants to make the test fair. Name one thing she should keep the same for every surface, besides using the same car.

10.A balloon rocket is released and air rushes out toward the left. Which way does the balloon move, and what causes it to move?

11.Explain why a soccer ball rolling across grass eventually slows down and stops. Include the name of a force and what it does.

12.Draw an object with unequal forces acting on it. Use arrows to show the direction and relative size of the forces, and label each force. Then explain how the object's motion could change.

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Forces and Motion Investigation

Forces and Motion Investigation

Investigation: Which surface slows a toy car most?

3 printable pages

About This Worksheet

Free in Kuraplan

Print-Ready

AI-Generated

For Teachers & Parents

Need a custom version of this worksheet?

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