Question

starting from a stationary point rahul paddels his bicycle in 30 sec and then he apply break such that celocity of his bicycle comes down to 4 m/s and attain velocity of 6 m/s in next 5 seconds calculate the acceleration of bicycle in both the cases
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Answer 1

Answer:

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