A body of mass 450g changes it speed from 5ms¹ to 25ms¹. what is the work done by the body?

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13 votes

Answer:

135J

Step-by-step explanation:

So we know ΔKinetic Energy= ΔWork

Kinetic energy=1/2mv²

So Kf-Ki=ΔK

ΔK=1/2*0.45(25²-5²)=135J

135J=ΔWork

Mahmoud Sabri answered Nov 12, 2022

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