If a cricket player can throw a ball to a maximum horizontal range of 60m, what is the maximum vertical height (in m) to which he can throw?
A
60
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B
30
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C
20
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D
50
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Solution
The correct option is B30 Range of projectile is R=u2sin2θg R is maximum when θ=45o ⇒60=u2gsin90o ⇒60=u2g
Maximum height of balls is H=u2sin2θ2g H is maximum when θ=90o ⇒H=u2sin290o2g =30m