Topic: Uniformly accelerated motion relations· Kinematics
A horizontal bridge is built across a river. A student standing on the bridge throws a small ball vertically upwards with a velocity 4 m s^-1. The ball strikes the water surface after 4 s. The height of bridge above water surface is (Take g=10 m s^-2…
A horizontal bridge is built across a river. A student standing on the bridge throws a small ball vertically upwards with a velocity \(4\,\mathrm{m\,s^{-1}}\). The ball strikes the water surface after 4 s. The height of bridge above water surface is (Take \(g=10\,\mathrm{m\,s^{-2}}\)) :
1. 68 m
2. 56 m
3. 60 m
4. 64 m