Question

what car have more kinetic energy if one car has 180kg mass and other car has 220kg mss but moving with same velocity​

Answer 1

Car with 220kg

K.E = Mv2 / 2

It’s proportional to mass

Answer 2

In this question we will solve using a constant Velocity. Let these both body is moving with Velocity 2 m/s

Now,

In first car,

=> K.E = 1/2 mv^2

=> K.E = 1/2 x 180 x 2 x 2

=> K.E = 360 J

Again,

In second car,

=> K.E' = 1/2 mv^2

=> K.E' = 1/2 x 220 x 2 x 2

=> K.E' = 440 J

Hence after solving we saw that car whose mass is 220 Kg has more Kinetic energy.