Physics, asked by abhishek14580, 11 months ago

please answer this McQ

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sking51: it will be doubled.
MuhammadQaiser: yes
abhishek14580: Hmm I think my book is wrong
MuhammadQaiser: thats ok u should try

Answers

Answered by MuhammadQaiser
2
it will be doubled this is right

abhishek14580: no bro answer is 8 times
abhishek14580: that's why I confused
abhishek14580: you it happens
abhishek14580: how*
MuhammadQaiser: let it solve by formula of ke then it would become double u should try
abhishek14580: OK bro
Answered by Anonymous
2
Normal K.E = 1/2mv^2
If mass is halved and speed is doubled
New K.E = 1/2*1/2*m*4v^2
= mv^2
therefore if the mass of body is halved and its speed is doubled then the K.E of body is doubled ...
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