Test - Unit 6 Motion

Question 1

13. The horses on a carousel or merry-go-round are accelerating because _______.

Answer 1

The direction of the horses’ motion is constantly changing.

Notes U6 C2 page 1

Question 2

20. A group of bike riders took a 4 hour trip. During the first 3 hours, they traveled a total of 50 km, but during the last hour they traveled only 10 km. What was the group’s average speed for the entire trip?

Answer 2

15 km/hr

Notes U6 C1 page 2

Question 3

23. Ben is exercising his pinyon a large, oval track. The pony is trotting at a constant speed of 10 m/s around the track. Which statement can be made about the pony’s motion?

Answer 3

The pony is accelerating.

Notes U6 C2 page 1

Question 4

25. The velocity of an object must include both a ______ and a ______.

Answer 4

Speed, direction

Notes U6 C1 page 2

Question 5

27. Can the velocity of a car change when it’s speed is constant? Explain why or why not.

Answer 5

Yes because velocity is speed + direction. You could be moving at a constant speed but changing direction, thus velocity changes.

Notes U6 C2 page 2

Question 6

32. What are three specific ways and object can accelerate.

Answer 6

Speeding up, slowing down, change direction

Notes U6 C2 page 1

Question 7

39. A competitive go-cart driver is traveling 32 m/s. He sees a caution flag go up, so he slows at a rate of -1.5 m/s2 in 10.8 s, what is his final velocity?

Answer 7

Velocity is speed and direction

Notes U6 C1 page 2