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ICSE Class 10 Answered

how much work is needed to be done on a ball of mass 50 grams to give a momentum of 500 gcm/s
Asked by pri | 13 Mar, 2012, 06:29: PM
answered-by-expert Expert Answer
velocity = 500/50 = 10 cm/sec
u=0
W = Force * distance
Force = m . a
acceleration = v-u/t = 10/1 = 10 cm/sec2
force = 50 * 10 = 500 gm cm/sec2
Work done = F . Distance = 500 * 1 = 500 gm cm2 /sec2
Answered by | 14 Mar, 2012, 11:45: AM

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