Physics, asked by Anonymous, 1 year ago

Plz. answer the above questions......It's urgent

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Answered by RISHITEZREDDYDHAVA

Hope you find this helpful

If it does mark my answer as brainlist answer

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Anonymous: wait wait wait, answer to the question 17...

RISHITEZREDDYDHAVA: when v is doubled, subs v as 10 and you get E as 100J

Anonymous: thanks for your help

RISHITEZREDDYDHAVA: when v is 3 times,subs v as 15, and you get E as 225J

RISHITEZREDDYDHAVA: Hope you find this helpful

If it does mark my answer as brainlist answer

Anonymous: but I will not mark u as brainliest RIGHT NOW because no second user has answer this question

Anonymous: when someone answer this question I will definitely mark u as brainliest

RISHITEZREDDYDHAVA: no problem

RISHITEZREDDYDHAVA: will you please mark my answer as brainlist answer I need to increase my rank

Anonymous: but no second user had answered this question so, there is no option to choose....

Answered by Rishika2710

Answer:

Mass of the body, m = 20 kg

Initial velocity, u = 5 m/s

Final velocity, v = 2 m/s

Initial kinetic energy of the body,

Final kinetic energy of the body,

Work done by the force = Change in kinetic energy

= Final kinetic energy - Initial kinetic energy

= Ekf - Eki

= 40 J - 250 J

= -210 J

Work done is negative because force is applied in the direction opposite to that of displacement.

Hope This Helps You

i have answered only 16th question becoz i know you hav got the others and answered this one so that you can choose the BRAINLIEST and mark the above answers as BRAINLIEST as i have already read the comments of the above answers

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