1. which object has the greatest inertia? a. baseball b. a tennis ball c. a ping pong ball d. a bowling ball 2. how is an object mass related to the force needed to start the object movingly? a. mass is not related to the force needed b. the smaller the mass, the greater the force needed c. the greater the mass, the greater force needed d. the greater the mass, the smaller the force needed 3. the total of the forces acting on an object is called? a. net force b. inertia c. speed d. balanced force 4. what happens to the motion of an object when the forces acting on it are balanced? a. the motion changes direction b. the motion does not change c. the motion speeds up d. the motion slows down answer all questions and all