Question

2. Two trailers, X with mass 500 kg and Y with mass 2000 kg, are being pulled at the same

Answer 1

Answer:C

Explanation:

let the speed be v for both mass x and mass y

mass(x)=500kg

mass(y)=2000kg

Kinetic energy(mass(x))=(500 x v^2)/2

Kinetic energy(mass(x))=250v^2

Kinetic energy(mass(y))=(2000xv^2)/2

Kinetic energy(mass(y))=1000v^2

Ratio of kinetic energy y to x =1000v^2:250v^2

=1000v^2 / 250v^2

=4/1=4:1