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Two cars A and B are at rest at the orig...

Two cars A and B are at rest at the origin O. If A starts with a uniform velocity of` 20 m//`s and `B` starts in the same direction with a constant acceleration of `2 m//s^(2)`, then the cars will meet after time

A

`10 s`

B

`20 s`

C

`30 s`

D

`40 s`

Text Solution

Verified by Experts

The correct Answer is:
B
Let the cars meet after time t.
A (uniform motion): `s=20 t …(i)`
B(accelerated motion): `s=(1)/(2).2.t^(2) …(ii)`
Equating (i) and (ii), we get
`t^(2) =20timpliest=20 s`
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