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ICSE Class 8 Answered

Calculate the kinetic energy of a ball weighing 300 g travelling at a velocity of 160 km/hr
Asked by visalakshi1516 | 18 Nov, 2018, 08:56: PM
answered-by-expert Expert Answer
Kinetic energy = (1/2)mv2
 
m = mass = 300 g = 300×10-3 kg = 0.3 kg
 
v = 160 km/hr = 160×(5/18) = 44.4 m/s
 
Kineteic energy = (1/2)×0.3×44.4×44.4 = 296 J
Answered by Thiyagarajan K | 19 Nov, 2018, 01:10: AM
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