Question

The deceleration produced by a bike is 1 metre per second square if its initial velocity is 20 metre per second calculate velocity after 5 sec and time in which it comes to rest??

Answer 1

Explanation:

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Answer 2

♧ Answer ♧

◇ Given,

Deceleration = -1 m/s²

u = 20 m/s

t = 5 sec.

v = ?

As, we know that

a = v-u/t

-1 = v-20/5

-5 = v-20

-5+20 = v

15 m/s = v (Answer)

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◇ Given,

u = 20 m/s

v = 0 ( it is given that it comes to rest)

a = -1 m/s²

t = ?

As, we know that

a = v-u/t

-1 = 0-20/t

-t = -20

t = 20 sec.(minus got cancelled out)

t = 20 sec.(Answer)

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