एक 10 किग्रा की वस्तु 1 मीटर की ऊंचाई से गिरती हैं तली पर गतिज ऊर्जा मे वृद्धि होगी
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v^2-u^2=2aS
here v is final velocity
u is initial velocity that is zero
a is gravity
S is height.
so v^2=2aS
2 X 9.8 X1m= V^2
V= under root of 19.6
v=1.4m/s
k.e. final would be = 1/2 X mass X v^2 = 1/2 X 10 X 19.6
pravin93:
thnx sir ji
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