A truck loaded with 5 metric tons of sand was moving at a speed of 20m / s. At that time 100 kg of sand fell through the hole of the truck. What is the current speed of the truck?
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Explanation:
Correct option is A)
F=u
dt
dm
+m
dt
du
=u
dt
dm
since u is constant.
∴F=10m/s×10kg/min=10×
60
10
kgm/s
2
=
3
5
N
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