Question

A car and a truck have the same speed of 30 m/s. If their masses are in the ratio 2:3

find the ratio of kinetic energy.​

Answer 1

Step-by-step explanation:

given ratio = 2:3

sum of ratio = 2 + 3 = 5

first part = 2/5*30 = 12 m/s

second part = 3/5*30 = 18 m/s

Answer 2

Step-by-step explanation:

We know that kinetic energy = 1/2mv^2

energy of car / energy of truck = 1/2 × 2×30^2÷1/2×3×30^2

=2/3

Therefore, the ration betn their kinetic energy is 2:3