I performed a lab, with a cart attached to a mass. I utilized 5 different masses (25g, 50g, 65g, 75g, and 100 g). Why is that my cart attached to the highest mass (100g) has the highest acceleration and force compared to my lightest mass attached to the cart (25g) which has the lowest mass and acceleration. I supplied a data table below.

Average Force Average Acceleration Mass (N (m/s?) 50 g 0.41155 N 0.5482 (m/s^2) 100 g 0.9904 N 1.280 (m/s 2) 75 g 0.6636 N 0.9235 (m/s^2) 65 g 0.5656 N 0.8903 (m/s^2) 25 g 0.1962 N 0.3170 (m/s^2)