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A ball is projected on smooth inclined p...

A ball is projected on smooth inclined plane in direction perpendicular to line of greatest slope with velcoity of `8m//s`. Find it's speed after `1sec`.

Text Solution

Verified by Experts

The correct Answer is:
`10 m//s`
component of `g _|_` to velcoity is `g sin 37^(@)`
`v_(x) = 8m//s`
`v_(y) = g sin 37^(@) t`
`rArr v_(y) = 10 xx 0.6 xx 1`
`rArr v_(y) = 6m//s`
`v = sqrt(v_(x)^(2) +v_(y)^(2))`
`rArr v = sqrt((8)^(2)+(6)^(2)) rArr v = 10m/s`
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