contestada

A student drops a rock from a bridge to the water 12.7 m below. with what speed does the rock strike the water? the acceleration of gravity is 9.8 m/s 2

Respuesta :

The rock strike the water with the speed of 15.78 m/sec.

The speed by which rock hit the water is calculated by the formula

v=[tex] \sqrt{2gh} [/tex]

v=[tex] \sqrt{2*9.8*12.7} [/tex]

v=15.78 m/sec

Hence, the rock strike the water with the speed of 15.78 m/sec.