Physics, asked by purvaihere, 1 year ago

A body has mass 100kg, what work has to be done to increase its velocity from 2m/s to 6m/s. Options -
1) 100J
2) 200J
3) 1600 J
4) 600 J

Answers

Answered by Nikitaroy

Right answer is 100 j

purvaihere: can u explain please?

Nikitaroy: sorry it's right answer is 1600j

purvaihere: so explain

Nikitaroy: velocity1=6m/s and velocity2=2m/s energy required =K. E1- K.E2, =1/2mv²1-1/2mv²2

Nikitaroy: apply this formula to solve your question

purvaihere: um i did this two years ago anyways thanks a lot buddy!

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