What is the work done to increase the velocity of a car from 36 km/h to 72 km/h if the mass of the car is 1500 kg ? (in J)
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Answer:
What is the work done to increase the velocity of a car from 36 km/h to 72 km/h if the mass of the car is 1500 kg ? (in J)
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10
Answer:
Work done (W)= Kinetic Energy (KE)
=1/2×m×(v^2-u^2)
Mass of car=m=1500kg
Initial velocity=u=
32 km/h
= 32×5/18
=10m/s
Similarly, Final velocity=v= 72km/h
=20m/s
KE= 1/2×m×(v^2 - u^2)
=1/2×1500×(20×20 - 10×10)
=1/2×1500×(400-100)
=1/2×1500×300 =2,25,000 J
Hope it is clear to you!!!
Please mark as the brainliest answer!!!
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