Test - Unit 3 Motion

Question 1

23. Ben is exercising his pony on 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 ponies motion?

Answer 1

The pony is Accelerating.

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Question 2

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

Answer 2

Yes because the velocity speed plus direction. You could be moving at a constant speed by changing direction, those velocity changes.

U1 C1 -Pg. 2

Question 3

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 seconds. What is his FINAL VELOCITY?

Answer 3

32m/s =Vi Vf=at+Vi

• 1.5m/s2 = a Vf= -1.5 x 10.8 +32
  10. 8s = t Vf= 15.8 m/s forward

Vf=?

Practice: Acceleration Math