A healthy youngman standing at a distanc...

A healthy youngman standing at a distance of 7 m from 11.8 m high building sees a kid slipping from the top floor. With what speed (assumed uniform) should he run to catch the kid at the arms hieght (1.8m)?

`2.5 m//s`

`5 m//s`

`7.5 m//s`

`10 m//s`

Text Solution

Verified by Experts

The correct Answer is:

for kid: `10=1/2g t^(2)impliest=sqrt(2) s`
Man: `7-vt=vsqrt(2)impliesv=5 m//s`

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