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A particle starts from rest accelerates ...

A particle starts from rest accelerates at `2 m//s^2` for `10 s` and then goes for constant speed for `30 s` and then decelerates at `4 m//s^2` till it stops. What is the distance travelled by it.

A

750 m

B

800 m

C

700 m

D

850 m

Text Solution

Verified by Experts

The correct Answer is:
A
`s=s_(1)+s_(2)+s_(3)`
`=(1)/(2)xx2xx(10)^(2)+(2)(10)(30)+(1)/(2)xx4xx(5)^(2)`
`=100+600+50=750m`
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