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A car moving with a speed of 25 ms^(-1) ...

A car moving with a speed of 25 `ms^(-1) ` takes a U-turn in 5 seconds, without changing its speed. The average acceleration during these 5 seconds is

A

`5ms^(-2)`

B

`10 ms^(-2)`

C

`2.5 ms^(-2)`

D

`7.5 ms^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Average acceleration = `("Change in velocity ")/("time taken")`
` = ( 25 - (-25))/( 5) = 10 ms^(-2)`
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