Test - U6 C3 Forces

Question 1

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

Answer 1

Continue to move at its constant speed

U6 C3 pg. 20

Question 2

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 2

The watermelon falls at a constant velocity

U6 C3 pg. 21

Question 3

22. An object that is falling freely has a constant what?

Answer 3

acceleration

U6 C3 pg. 22

Question 4

Vocab Terms

32. Related to the amount of force needed to change an objects motion

Answer 4

Momentum

U6 C3 pg. 23

Question 5

38 b. What speed will the skydiver eventually reach?

Answer 5

55 m/s

U6 C3 pg.

Question 6

43. A man and his bike are 95 kg. His instantaneous speed at one point is 14 m/s. The next time his speed is checked he is going 28 m/s. If the second speed was taken 7 s later, what force must the man have given his bike to change the speed? What was the bicyclist’s final momentum?

Answer 6

F = 190 N

U6 C3 pg. 21-22