Question

. The relecity of a car inrose from 54 km Thor to 72 km / ho. How ruch
s to work done if the mail of the car is 1500kg ?​

Answer 1

Answer:

54 km/h is equal to 15 m/s. and 72 km/ h is equal to 20 m/ s. According to work energy theorem the work done is equivalent to the difference of the kinetic energy of the car. w = 1/2×1500(20^2 — 15^2) = 750(400 — 225) = 750×175 = 131250 joule.

Explanation:

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