A marble is dropped straight down from a distance h above the floor. Let F_m = the magnitude of the gravitational force on the marble due to the earth;
F_e= the magnitude of the gravitational force on the earth due to the marble;
A_m= the magnitude of the acceleration of the marble toward the earth;
A_e= the magnitude of the acceleration of the earth toward the marble.
Which set of conditions is true as the marble falls toward the earth? Neglect any effects of air resistance.

Question

Quizplus · Accepted Answer

According to Newton's third law, the forces are equal in magnitude (F_m = F_e). However, due to the large mass of the Earth compared to the marble, the acceleration of the marble (a_m) is much greater than the acceleration of the Earth (a_e).

A Marble Is Dropped Straight Down from a Distance H