Awooden block is place at rest on a frictionless incline plane. the block is then release from point a which is at 10m height. it continues to move as it passing point b and c. determine the velocities of the wooden block at point b and c

Here since friction is not present in this case so we will use mechanical energy conservation law

As per this mechanical energy conservation law sum of potential energy and kinetic energy will always remains constant

To find the speed at point B we will have

Now similarly for speed at point C

-4 on

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explanation: