the velocity of a car increased from the 54 km per second to 72 km per second how much is the work done if the mass of the car is 1500 kg
Answers
Answered by
0
we know that
work done is equal to change in kinetic energy
so
W = Final K.E - initial K.E
final KE = (1/2)m v^2 = 0.5 * 1500* (72*1000)^2 = 3.888*10^12J
initial KE = 0.5*1500*(54*1000)^2 = 2.187*10^12 J
work done = 1.701 * 10^12 J
Any doubts comment below :))
work done is equal to change in kinetic energy
so
W = Final K.E - initial K.E
final KE = (1/2)m v^2 = 0.5 * 1500* (72*1000)^2 = 3.888*10^12J
initial KE = 0.5*1500*(54*1000)^2 = 2.187*10^12 J
work done = 1.701 * 10^12 J
Any doubts comment below :))
shreya8515:
the answer is wrong
what is the actual answer?
I had a doubt that the speed 54km per second or hour ??
Similar questions