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Question

Question: The diagram shows the displacement-time graph for a particle moving in a straight line. The average ...

The diagram shows the displacement-time graph for a particle moving in a straight line. The average velocity for the interval t = 0, t = 5 is

A

0

B

6 ms–1

C

– 2 ms–1

D

2 ms–1

Answer

– 2 ms–1

Explanation

Solution

Average velocity = Totaldisplacement Totaltime\frac{\text{Totaldisplacement }}{\text{Totaltime}}

= (20)+(20)+(10)5\frac{(20) + ( - 20) + ( - 10)}{5} = –2 m/s