1.

A cricket fielder can throw the cricket ball with a speed v_0 . If the throws the ball while running with speed u at an angle thetato the horizontal,

Answer»

the effective angle to the horizontal at which the ball is projected in air as seen by a SPECTATOR is`tan^(-1) ((v_0 SIN theta)/(v_0 cos theta +u))`
time of flight is `(2v_0 sin theta)/(g)`
the distance (horizontal RANGE) from the point of projection at which are ball will land `R = (2v_0 sin theta (v_0 cos theta + u))/(g)`
all the above

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