the kinetic energyof an object of mass m moving with a velocity of 5m/s is 25j.what will be its kinetic energy when its velocity is doubled?what will be the kinetic energy when its velocity is incresd 3 times?

the K.E(KINETIC ENERGY) of the object is 25 J.

So,

25=1/2*m*(5)^{2}

**Therefore,m=2 kg.**

**Now, when the velocity is doubled=2*5=10 m/s(ms ^{-1})**

So,

**K.E.=1/2*2*(10) ^{2 }=100 J.**

**Now,when the velocity is increased three times,the velocity will be=3*5=15**

**Therefore,K.E.=1/2*2*(15) ^{2} = 225 J.**

Hope this helps...

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