A body is thrown vertically upwards with an initial velocity of 100 m/s. Find :

(i) Time taken to reach maximum height

(ii) Maximum height reached

(iii) Velocity after 5 second

Take g = 10 m/s2

Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM

Expert Answer:

Given, u = 100 m/s; v = 0 m/s; a = g = -10m/s2

(a) Time taken to reach maximum height

t = (v - u)/a = (0 - 100) / (-10) = 10s

 

(b) Maximum height reached is

 

(c) Velocity after 5 second

v = u + at = 100 + (-10 x 5)

= 50 m/s

Answered by  | 4th Jun, 2014, 03:23: PM