Newton's second law:
Elephant and feather - Free fall:
Newton's second law: an unbalanced force causes an object to accelerate.There are two factors to be considered when figuring out the acceleration of an object - mass and force. The elephant in this animation experiences a greater force than the feather, thus would experience a greater acceleration. However, the mass of the elephant resists this acceleration; therefore, it would have the same acceleration as the feather.
