A ball is thrown at a certain angle α from base of a incline with an inclination β . The initial speed of the ball is u. The ball hits the inclined surface perpendicularly as it lands back on the incline. Find :
The time for which the ball was in air.
The distance traversed by the ball along the incline.
Please think how the final velocity along Y axis is zero before going on next slide.
u β α INCLINE Y X g β g Cos β g Sin β As mentioned in the problem the ball strikes the inclined surface perpendicularly. So its velocity along X axis is zero. Have a look on the picture and get it concept cleared.