Test - Force

Question 1

4. An object in motion with no unbalanced forces acting on it will…

Answer 1

Continue to move in its path at a constant speed.

U6 C3 Newton’s Laws of Motion
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Question 2

6. The relationship among mass, force, and acceleration is explained by…

Answer 2

Newton’s 2nd Law of Motion.

U6 C3 Newton’s Laws of Motion
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Question 3

8. The size of the gravitational force between two objects depends on their…

Answer 3

Frictional Forces.

U6 C3 Newton’s Laws of Motion
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Question 4

9. An astronaut is planning a trip to a newly-discovered planet. According to the Law of Universal Gravitation, the astronaut’s weight on the new planet will be greater than his weight on Earth if:

Answer 4

The new planet has more gravity than Earth.

U6 C3 Newton’s Laws of Motion
Pg 22

Question 5

10. A baseball player swings his bat but hits a fly that was hovering over home plate. The acceleration of the fly compared to what the acceleration of the ball would have been with the same force applied to it would be…

Answer 5

Larger.

U6 C3 Newton’s Laws of Motion
Pg 22

Question 6

13. When two forces on the same object are equal and opposite, these forces are called ______ forces.

Answer 6

Balanced.

U6 C3 Newton’s Laws of Motion
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Question 7

17. Consider a watermelon that starts from rest and is dropped straight down from a tall building. Air resistance can be ignored. Which statement about the watermelon’s motion is false?

Answer 7

After 2 seconds, it’s velocity is 19.6 m/s2.

U6 C3 Newton’s Laws of Motion
Pg 22

Question 8

38b. What speed will the skydiver eventually reach? What is this speed called?

Answer 8

Terminal velocity, 55 m/s

U6 C3 Newton’s Laws of Motion
Pg 22

Question 9

38c. Why does this occur?

Answer 9

Gravity causes the skydiver to accelerate.

U6 C3 Newton’s Laws of Motion
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Question 10

43. 28 - 14/7

Answer 10

2 m/s2

U6 C3 Newton’s Laws of Motion
Pg 24