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Grade: 11
        
A particle is thrown upward with velocity 50m/s from the top of a tower of height  120m find the time taken for the particle to reach the ground 
6 months ago

Answers : (1)

MANAV S
34 Points
							
Initial velocity. u=-50m/s.  (Taking downward direction as positive) 
Displacement. s=120m
Acceleration. g=10m/s^2
s=ut+1/2at^2
120=-50t+1/2*10t^2
On simplifying 
t^2-10t-24=0
Solving
t=12s (need not consider other soln which is -2)
6 months ago
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