Question

Starting from a stationary position A, Rahul moves his bicycle on a straight road

to reach another point B a distance of 90m and returns back to A in 30 s.

Calculate the average velocity.​

Answer 1

Explanation:

For first case:

Initial velocity =0

Final velocity =60m/s

Time =30sec

v=u+at

6=0+a×30

6=30a

a=

30

6

=0.2

a=0.2m/s

2

For second case:

Initial velocity =6m/s

Final velocity =4m/s

Time taken =5sec

v=u+at

4=6+a×5

4−6=5a

−2=5a

a=−

5

2

a=−0.4m/s 2

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