An object moves 20 m towards the east and then 10m towards the west in 5 seconds. What is its average velocity and average speed?
Correct answer: A. Speed = 6 m/s, velocity = 2 m/s
- A. Speed = 6 m/s, velocity = 2 m/s
- B. Speed = 6 m/s, velocity = 6 m/s
- C. Speed = 2 m/s, velocity = 2 m/s
- D. Speed = 2 m/s, velocity = 6 m/s
Explanation
Speed = total distance/time = 10+20/5 = 6m/s Velocity = total displacement/time = 20-10/5 = 2m/s So A is the correct answer.
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