Question

a car is moving with a speed of 15 km/h and another identical car is moving at a speed of 30 km/h . compare their kinetic energy​

Answer 1

Answer:

the answer is 4

Explanation:

let k1is a kinetic energy of first car and K2 of second car

K1 = (m/2)v12

K2 = (m/2)v22

K2/K1 = (v2/v1)2 = (30/15)2 = 4

Answer 2

Answer:

Explanation:

let k1is a kinetic energy of first car and K2 of second car

K1 = (m/2)v12

K2 = (m/2)v22

K2/K1 = (v2/v1)2 = (30/15)2 = 4