Eighth Grade Science Unit 2 Quiz 3 S8P3.c F=ma

by julius smith

| 5 QuestionsNote from the author:

S8P3.c

1

1

Jose sets up an investigation to determine the effect of force on mass. First, he rolls a 100-gram ball down a ramp and hits the back of a parked 50-gram car. He measures the distance the car moved. Next, he rolls the 100-gram ball down the same ramp and hits the back of a parked 100-gram car. He measures the distance the car moved. Which of the following is most likely to be the result of Jose's experiment

A. The 100-gram car moved farther than the 50-gram car.

B. The 50-gram car moved farther than the 100-gram car.

C. Both cars moved the same distance.

D. Neither car moved any distance.

2

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A. Block 1, because it has the smallest weight

B. Block 2, because its weight and surface area are the same

C. Block 3, because it has the smallest surface area in contact with the table

D. All three blocks require the same amount of force.

3

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A. The student's claim is correct because acceleration decreases as mass increases.

B. The student's claim is correct because acceleration increases as mass increases.

C. The student's claim is incorrect because acceleration decreases as mass increases.

D. The student's claim is incorrect because acceleration increases as mass increases.

4

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A. Heavier objects require less force than lighter objects to accelerate at the same rate.

B. Heavier objects require greater force than lighter objects to accelerate at the same rate.

C. Lighter objects require less force than heavier objects to start moving but will accelerate at the same rate.

D. Lighter objects require greater force than heavier objects to start moving but will accelerate at the same rate.

5

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A. Because block 2 has a smaller mass than block 1, block 2 will require less force to accelerate.

B. Because block 1 has a smaller mass than block 2, block 1 will require less force to accelerate.

C. Because block 2 has a smaller mass than block 1, block 2 will require greater force to accelerate.

D. Because block 1 has a smaller mass than block 2, block 1 will require greater force to accelerate.

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