A stone is dropped from rest from the edge of a bridge and reaches the river surface in
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A stone is dropped from rest from the edge of a bridge and reaches the river surface in 4.0s. Take g=9.8m/s2.
(i) Determine the height of the bridge above the river.
(ii) Find the speed of the stone just before it strikes the water.
(iii) The same stone is now released from the same bridge on the Moon where gmoon=61gearth. Calculate the time it would take to reach the lunar surface.