Module 3 Quizzes

Question 1

Which of the following is not a vector?

A. force
B. time
C. acceleration
D. displacement

Answer 1

B

Question 2

A cyclist cycles 7 km west and then 12 km north. What is the magnitude of her displacement vector?

A. 10 km
B. 5km
C. 19 km
D. 14 km

Answer 2

D

Question 3

Vector S magnitude 4 m and is directed to the south. Vector E has magnitude 3 m and is directed to the east. What are the magnitude and direction of S - E?

A. 5 m, southeast
B. 1 m, southwest
C. 5 m, southwest
D. 1 m, southeast

Answer 3

C

Question 4

Add the three vectors graphically to get the resultant vector.
(Look at quiz for drawing)

Answer 4

A

Question 5

A velocity vector V has magnitude 11 m/s and has an angle of 35 degrees below the negative x axis. What are this vector’s x and y components? Drawig a diagram should help.

A. Vx = 9.0 m/s ; Vy = 6.3 m/s
B. Vx = -6.3 m/s ; Vy = 9.0 m/s
C. Vx = 6.3 m/s ; Vy = 9.0 m/s
D. Vx = -9.0 m/s ; Vy = -6.3 m/s

Answer 5

D

Question 6

A ball is dropped from rest and takes 1.3 s to hit the ground. From what height was it dropped?

A. 7.5 m
B. 8.3 m
C. 13 m
D. 17 m

Answer 6

B

Question 7

Starting at the same time, an arrow and a ball are shot horizontally with speeds of 50 m/s and 44 m/s respectively from the top of a building over flat ground. Which best describes what happens?

A. The arrow and the ball land the same distance from the building at different times.
B. The arrow and the ball land at different distances from the building at different times.
C. The arrow and the ball land the same distance from the building at the same time.
D. The arrow and the ball land at different distances from the building at the same time.

Answer 7

D

Question 8

A catapult launched a rock with an initial speed of 35 m/s at an initial angle of 22 degrees above the ground from a height of 0.0 m. After the rock has traveled 10 m horizontally along the ground from its starting point, what is its height above the ground?

A. 3.7 m
B. 4.1 m
C. 5.0 m
D. 3.6 m

Answer 8

D

Question 9

If a t-shirt gun can fire t-shirts with an initial speed of 15 m/s, what is the maximum distance (along the horizontal, flat ground) a t-shirt can be fired?

A. 23 m
B. 21 m
C. 30 m
D. 27 m

Answer 9

A

Question 10

Jackie Joyner-Kersee is the American record holder in the long jump with a distance along the ground of 7.49 m. If her take-off angle with the ground was 40 degrees, what was her take-off speed (the magnitude of her take-off velocity)?

A. 9.78 m/s
B. 8.63 m/s
C. 11.7 m/s
D. 8.21 m/s

Answer 10

B