Question

a ball is thrown vertically upward with the velocity u from the top of a tower . if it strike the ground with velocity 3u. find the time taken by the ball to reach the ground ​

Answer 1

Secondary SchoolPhysics 5+3 pts

A ball is thrown vertically with a velocity u from top of tower . if it strike the ground with velocity 3u the time taken by the ball to reach the ground is

Report by Iram6 04.09.2017

Answers

The Brain

Vam2003 Expert

The formula to find time when a body is thrown up is 2u/g∴∴∴

2u/g=2u/10 ( take g as 10 m/s² for simplicity)

to find time taken to reach ground from top of tower to ground,

v=u+at

3u=u+gt

3u-u=gt

2u=gt

2u/g=t

t=2u/10

∴total time=2u/10+2u/10=4u/10=0.4u seconds

pls mark as brainliest !

follow me !