Question

6. What work is said to be done to
increase the velocity of a car
from 15 km/h to 30 km/h if the
mass of the car is 1000 kg​

Answer 1

Answer:

26041.7Joule.

Explanation:

work done= change in k.E.

K.E=1/2mv^2

=1/2×1000×50/12×50/12

=8680.5 joule

K.E=1/2mv^2

=1/2×1000×100/12×100/12

= 34722.2 joule

= 34722.2 - 8680.5

= 26041.7 joule

Hence work done= 26041.7 joule

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