Question

if the mass of car 200kg. then how much work Will be done to increase it's velocity from 36 km/h to 72 km/ h​

Answer 1

Answer:

30 K JOULES

Step-by-step explanation:

u=36*5/18 =10 m/s

v =72 *5/18 =20 m/s

m = 200 kg

work done = (1/2)*200*(20*20-10*10)

=100 (400-100) = 100 * 300 =30 K JOULES

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