An object is projected upward with a velocity 49m/s it will come to the ground after a time ????
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u=49m/s
v=0m/s
g=10m/s^2
taking upward direction as positive
v=u+at
0=49-10t
49=10t
t=4.9s -time taken for upward journey
total time T will be
T=2t
=2×4.9
T=5.8s -ans
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