Three carts sit on a frictionless straight track at the following positions: a 1.5kg cart at x=+1.0m, a 2.0kg cart at x=−0.5m, and a 0.5kg cart at x=+2.0m. What is the x-coordinate of the center of mass of the system?
a) +0.88m
b) +0.50m
c) +0.38m
d) +0.83m