Question

A slingshot fires a pebble from the top of a building at a speed of 10.3 m/s. The building is 38.4 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground when it is fired vertically straight up.

Answer 1

29.30m/s

Step-by-step explanation:

From the question the equation the net work done by the external non-conservative force is zero Wnet work = 0J