Test - Unit 5 Motion

Question 1

5. A object in motion must undergo a change of

Answer 1

B. Position.

Unit 6, Concept 1, page 2.

Question 2

6. A softball pitcher throws a ball at 42 meters per second. If the batter is 18 meters from the pitcher approximately how much time does it take for the ball to reach the batter?

Answer 2

D. 0.43 s

Unit 6, concept 1, page 3

Question 3

28. Explain the difference in relation to speed, between positive and negative acceleration.

Answer 3

Positive acceleration is speeding up, negative acceleration is slowing down.

Unit 6, concept 1, page 5