Physics
Grade-10
Easy

Question

When the speed of the moving object is doubled its:

  1. Acceleration is doubled
  2. Momentum becomes four times more
  3. K. E. is increased to four times
  4. Potential energy is increased

hintHint:

Velocity is defined as the rate of change of position of an object with respect to time. And velocity is also defined as the amount of distance traveled by an object in a given amount of time.

The correct answer is: K. E. is increased to four times


    When the speed of the moving object is doubled its: K. E. is increased to four times
    K E space equals space 1 half cross times m v squared
I f space t h e space v e l o c i t y space i s space d o u b l e d comma
K E space equals space 1 half cross times m left parenthesis 2 v right parenthesis squared K E space space 1 half cross times m left parenthesis 4 v squared right parenthesis
B y space a r r a n g i n g space t h e space a b o v e space e q u a t i o n comma space
K E space equals space 4 cross times left parenthesis 1 half cross times m v squared right parenthesis

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