Question

. Starting from rest, Nikita paddles her bicycle to attain a velocity of 5 ms-1 in 25 s.

Then

she applies brakes so that the velocity of the bicycle comes down to 4 ms-1 in

the next 5 s. Calculate the acceleration of the bicycle in both the cases.

Answer 1

Answer:

1st case

u = 0

v = 5m/s

t = 25 sec

a = (V-U)/t = 5/25

= 1/5m/s^2

2nd case

u = 5

v = 4

t = 5

a = (V-U)/t

= (-1)/5m/s^2

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