The mass of an object causes the gravitational force exerted by that object, and gravitation is a constant impelling force. Given these facts, the mass of an object causes _. among the following options:
- heat is produced
 - kinetic energy
 - It gets heated up
 - a constant impelling force
 - a tree falling
 - a lot of human deaths
 - principals of aerodynamics
 - body temperature reduces


 

    a constant impelling force     