Question

In the great shopping cart race, two students push on shopping carts. A having twice the mass of B, with the same force applied over the same distance. Which shopping cart has more KE by the time it gets to the end of the course?

A. cart A
B. cart B
C. neither, they have the same KE

Answer 1

K = 1/2 m x v^2

m = mass on the cart

V = velocity imparted to the cart

KA = 1/2 mA x vA^2.......................(1)

KB = 1/2 mB x vB^2........................(2)

Diving equation 1 by equation 2, we get -

KA/KB = mA/mB

= 2

KA = 2 x KB

Option A is correct