A 10 pound iron ball and a 2 pound iron ball are dropped simultaneously from a height of 100 meters. Neglecting air resistance, which ball will reach the ground first?
A) The 10 lb ball
B) The 2 lb ball
C) They will reach the ground at the same time.

Question

Quizplus · Accepted Answer

Both balls will reach the ground at the same time because they experience the same acceleration due to gravity, 9.8 m/s^2. This is known as the principle of equivalence and was first demonstrated by Galileo Galilei in the 16th century. The mass of an object does not affect its acceleration due to gravity, only its weight (which is proportional to mass and the acceleration due to gravity). Therefore, both balls will fall at the same rate and hit the ground simultaneously.

A 10 Pound Iron Ball and a 2 Pound Iron