It is required to increase the velocity of a car of mass 1200 kg from 36km/h to 54km/h in 3 seconds. Calculate the force required.
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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
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Thanks¡❤️
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