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Balls are thrown vertically upwards in s...

Balls are thrown vertically upwards in such a way that the next ball is thorwn when the previous one is at the maximum height. If the maximum hieght is `5m`, the number of balls thrown per minute will be

A

`40`

B

`50`

C

`60`

D

`120`

Text Solution

Verified by Experts

The correct Answer is:
C
`h_("max")=u^(2)/(2g)rArr u=12xx10xx5=10 m//s`
`t_(H)=sqrt((2xx5)/10)=1 s` no. of balls in one min.
`=1xx60=60`
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