Question

A car and a truck have the same speed of 60 m/s. If their masses are in the ratio 1:4. Find the ratio of their kinetic energy.

Answer 1

velocity of vehicles = 60 m/s

masses = 1:4

let the constant ratios be x

K.E = 1/2 mv²

KE of car = 1/2 × x × 60²

KE of car = 1800x

KE of truck = 1/2 × 4x × 60²

KE of truck = 7200x

ratios = 1800x : 7200x

         = 1800 : 7200

         = 1 : 4

Answer 2

Answer:

Ratio of their kinetic energy will also be 1:4

Explanation:

Hope this helps