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प्रश्न
A moving body weighing 400 N possesses 500 J of kinetic energy. Calculate the velocity with which the body is moving. (g = 10 ms2)
उत्तर
Given : Weight = 400 N,
W = mg
400 = m × 10
m = 40 kg
Now, Kinetic Energy =`1/2"mv"^2`
`500 =1/2xx40xx"v"^2`
v = 5 m/s
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