Answer:
According to Newton's second law of motion, an object with a heavier mass will have more acceleration than an object with a smaller mass if both objects are moving with the same speed.
Explanation:
F=ma
a=F/m
a∝1/m
mass of any object is inversely proportional to its acceleration.
hence proved, an object with a heavier mass will have more acceleration than an object with a smaller mass if both objects are moving with the same speed.
B. a car on a track, a stop watch, and a ruler
If the surface is perfectly frictionless AND level ... no ups and downs ... then the puck never slows down or stops. There's nothing to make it do so. (Notice that "perfectly frictionless" means no air resistance either.)