Test - Unit 6 Forces

Question 1

1. baseball player swings and misses and hits a fly. The acceleration of the fly compared to the acceleration of the ball would have been with the same force applied to it would be?

Answer 1

Larger.

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Question 2

2. A 500 N force is applied to a 25 m/s2 object. The mass of the object is?

Answer 2

20kg.

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Question 3

3. Weight is constant no matter where you are located. True or false.

Answer 3

False.

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Question 4

6. What is the weight of the box in the picture to the right?

Answer 4

245 N

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Question 5

9. A man weighing 800 N is standing on a chair. In order to support the man what force is the chair exerting?

Answer 5

800 N up

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Question 6

11. If the block in the picture above has an acceleration of 1 m/s2, what would be the blocks mass?

Answer 6

0.135 kg.

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Question 7

17. A firefighter feels the hose pushing backwards onto him as he uses it to put out a fire. What is the most likely cause of this?

Answer 7

The escaping water exerts an equal and opposite force on the hose.

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Question 8

29. The attraction any two objects have on one another.

Answer 8

Gravity

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Question 9

38 b. What speed will the skydiver eventually reach?

Answer 9

55 m/s

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Question 10

38 c. Why does this occur?

Answer 10

Because gravity and air resistance become balanced.

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