Question

A smooth plane AB is 10 meters long, It is inclined at 30 degrees to the horizontal with the lower end, B, 6 meteres vertically above horixontal ground. A particle is placed on the plane at the upper end, A, and then released from erst so that it slides down the plane. Find the speed of the particle as it strikes the ground.
bobpursley
Consider energy.

Gravitation energy in ball=KE when it hits

mg6+mg(10sin30)=1/2 m v^2
solve for v

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