Questions
A projectile is thrown with the point of projection as origin. In t seconds the vertical height covered by it is and the horizontal distance covered is . The velocity with which the body is projected is___
detailed solution
Correct option is C
At time t = 0vx=dxdt=6−6t2=6m/svy=8−10t=8m/s∴v=vx2+vy2=36+64=10m/sTalk to our academic expert!
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A body which has a speed of 5km/hr in still water crosses a river of width 1km along the shortest possible path in 15minutes. The velocity of the river water in km/hr is
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