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CBSE Class 9 Answered

the kinetic energy of a body of mass 0.5 kg and the momentum 50kg m/s is _________J
Asked by | 25 Dec, 2011, 12:00: AM
Expert Answer
m=0.5 kg
mv=50 kg m/s
v = 50/0.5 = 100 m/s
KE = 1/2(mv2)
    =1/2(mv)v
    =1/2 x 50 x 100
    =2500 J
Answered by | 25 Dec, 2011, 08:21: PM
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