Question

a force is applied on a car of mass 1500kg so that its speed increase from 54km/h to72 km/h find the work done by the force on the car​

Answer 1

Answer:

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Answer 2

Answer:

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m=1500kg

u=54km/h=54×5/18=15ms-1

u= 72km/h=72×5/18=20 ms-1

w=1/2mv2-1/2mu2=1/2m(v2-u2)

=1/2×1500(400-225)=131250

J=1.3×105J

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