Question

an apple falls from a tree because of the gravitational attraction between the earth and the apple. if f1 is the magnitude of the force exerted by the earth on the apple and f2 is the magnitude of the force exerted by the apple on the earth them​

Answer 1

According to Newton's III law "Every action has an equal and an opposite reaction". An apple falling down has the force of gravity acting downward (F

1

) which is the action. The opposite reaction is the force the apple exerts on the earth (F

2

).