Question

You cast a pebble at 1.8 m/s at a pond from 0.7 m above ground. How...

You cast a pebble at 1.8 m/s at a pond from 0.7 m above ground. How fast is it when it is about to land in the pond 0.9 m below the ground?

Hint: use mechanical energy conservation. The direction of the velocity is irrelevant. It doesn't have to travel straight up or down. Pebble's final position is negative.

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Answer #1

Speed of pebble when it is about to land in the pond is 5.9 m/s approx.

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