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If a car at rest, accelerates uniformly ...

If a car at rest, accelerates uniformly to a speed of `144 km//h` in `20s`, it covers a distance of

A

20 m

B

400 m

C

1440 m

D

2880 m

Text Solution

Verified by Experts

The correct Answer is:
B
Here ` " " v= 144 km //h =40 m //s `
` " " v=u+ at rArr 40=0 + 20 xx a rArr a=2 m//s ^(2) " "therefore s= (1)/(2) at^(2) =(1)/(2) xx 2xx (20) ^(2) =400 m . `
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