plz solve this one and explain too
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Initial momentum = 0
Final momentum = 50v + 0.5×2
[where v is speed of man just after he throws the stone]
Total momentum should be conserved
Initial momentum = Final momentum
0 = 50v + 1
v = -0.02 m/s
[-ve sign because man will travel in the opposite direction of stone]
Time taken by stone to reach ground = Distance/Speed
= 10m / 2m/s
= 5 seconds
Distance travelled by man in 5 seconds = Speed × Time
= 0.02 × 5
= 0.1 m
Distance of man above the floor after 5 seconds = 10m + 0.1m
= 10.1 m
(b) is the correct option.
Final momentum = 50v + 0.5×2
[where v is speed of man just after he throws the stone]
Total momentum should be conserved
Initial momentum = Final momentum
0 = 50v + 1
v = -0.02 m/s
[-ve sign because man will travel in the opposite direction of stone]
Time taken by stone to reach ground = Distance/Speed
= 10m / 2m/s
= 5 seconds
Distance travelled by man in 5 seconds = Speed × Time
= 0.02 × 5
= 0.1 m
Distance of man above the floor after 5 seconds = 10m + 0.1m
= 10.1 m
(b) is the correct option.
NidhiBhatt:
so smart!! thanks
You’re welcome
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