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Q.

The car initial velocity is 5m/s and final velocity is 10m/s in the time interval of 2sec. Find the rate of change of velocity of the car. 

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a

7.5ms-2

b

2.5ms-2

c

2.5ms-1

d

3ms-2

answer is B.

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Detailed Solution

The rate of change of velocity is acceleration (a)

u =5ms-1

v = 10ms-1

Time =2sec

a =v-utime  a= 10-52 a= 52 a= 2.5ms-2

 

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