Question

mass of a body is 40g has a velocity of 10cm/s .the mass and velocity of another body is 80g and 15cm/s. compare their kinetic energy.​

Answer 1

Answer:

Explanation:

CASE 1 :

MASS , M₁ = 40 G

VELOCITY , V₁ = 10 CM/S

KINETIC ENERGY , K E₁ = 1/2 M₁V₁²

K E₁ = 1/2*40*10²

K E₁ = 2000 G CM²S⁻²...............(1)

CASE 2 :

MASS,M₂ = 80 G

VELOCITY , V₂ = 15 CM/S

KINETIC *ENERGY , K E₂ = 1/2 M₂V₂²

K E₂ = 1/2*80*15*15

K E₂ = 40*15*15

K E₂ = 9000 G CM²S⁻²..........(2)

(1)/(2)

K E₁/ K E₂ = 2000/9000

K E₁/ K E₂ = 2/9.

HOPE THIS HELPS.