Aforce that causes mass movement is called
a. distance
c. weight
b. gravity
d. none of the above

A force that causes mass movement is called weight. The force of gravity is the force with which massively large objects such as the earth attracts another object towards itself. All objects of the earth exert a gravity that is directed towards the center of the earth. Therefore, the force of gravity of the earth is equal to the weight of the object. Weight is equal to mass times the acceleration due to gravity. The mass of an object has a gravitational acceleration of 9.8 m/s2. The answer is letter C.