Rapid-Car-for-Motion-Experiments-Rapid-P10822-5-p-These-sturdy-cars-have-a-hook-on-one-end-that-can-be-used-for-attaching-cables-spring-balances-or-for-joining-two-cars-together-Applications-for-these-vehicles-include-experiments-on-simple-&-accelerated-motion-friction-impulse-conservation-laws-&-inclined-planes-p-Rapid-Car-for-Motion-Experiments-130mm-x-80mm