Question

Calculate K.E=1/2mv2​

Answer 1

Answer:

objects in a motion possess kinetic energy

let the inital velocity of the object be 0, and final velocity be v

using the equations of motion

2as = v² - u²

s = v² - u² / 2a

s = v² / 2a ⇒ eq. 1

and we know that

W = F×s

from eq. 1

W = F × v²/2a

   = ma × v²/2a

   =  mv²/2

   = 1/2mv²

Since work done is equal to K.E

∴ K.E = 1/2mv²