Physics, asked by deepas05122001, 1 year ago


The kinetic energy of a particle moving along a straight line varies uniformly with respect to time. The force acting on the particle is
[A]
constant

[B]
proportional to velocity

[C]
inversely proportional to velocity

[D]
inversely proportional to square root of velocity


deepas05122001: plz answer
deepas05122001: its urgent
deepas05122001: but the answer given is C
deepas05122001: bt i dont know the explanation

Answers

Answered by BrainlySmile
14
Answer is C.. As here the foce i.e. Kinetic Energy is acting according to the inversely proportion of the velocity. Hope I helped u... Plz mark as the BRAINLIEST answer...

deepas05122001: can you explain in detail plz
deepas05122001: i am unable to understand
BrainlySmile: Sorry there is a connection problem..
deepas05122001: anyone else who could explain
Answered by july2013
17
K.E = 1/2 mv² = 2k•E/V² F = m×a a = V/t F = mv/t F = 2•K•E / V² × V / t F = 2• K•E/ Vt F =k/v

july2013: Wait let me make it more clear
july2013: K.E = 1/2 mv² = 2k•E/V² 
july2013: F = m×a      a = V/t
july2013: F = mv/t
july2013: F = 2•K•E / V² × V / t 
july2013: Therefore,  F is inversely proportional to 1/V
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