Question

The car is having with a velocity of 10m/s having mass of what will be the K. E of the car it is velocity is changed to 20m/sec​

Answer 1

Answer:

K.E. will increase 4 times

Explanation:

let K.E. when velocity is 10m/s is =x

let K.E. when velocity is 20m/s is =y

let v1=10m/s

v2= 20m/s

As car is same so mass will be same

x= .5*m*10*10 = 50m

y= .5*m*20*20 = 200m

x/y= 50m/200m

x/y= 1/4

y= 4x

its mean

K.E. will increase 4 times