what is the work to be done to increase the velocity from 18 km/hr
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Initial v.= 18km/hr= 5 m/s
Final v.= 90km/hr= 25m/s
Work done = kinetic energy
K.e= 1/2 m(v^2 -u^2)
= 1/2×2000(25^2-5^2)
=1000(625-25)
=600000 J
Hope it will help!!
PRATHAMABD:
is it important to convert in m/sec
tell
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