7. Which of the following is an example of balanced force?
a. Throwing a ball
b. Pushing a cart
C.A book located at the top of the table
d. Students playing thug of war

8. It is simply the sum of all forces acting on an object?
a. Equilibrant force c. net force
b. Equilibrium d. total force.

9. Å 500 N lady siis on ihe floor. How much force the floor exerts on her?
a. 500 N C. 50 N
b. 1000 N d. 5000 N

10. Which is NOT a unit of force?
a. dyne c. newton
b. Joules d. pounds

11. What force is always directed opposite to the motion of an object?
a. friction c. magnetic
b. gravitational d. tension

12. What force acts perpendicular to the surface of the object in contact with?
a. applied c. magnetic
b. gravitational d. normal

13. When a cabinet touches the floor, which type of forces exist?
a. contact force
b. non-contact force
c. both a &b
d. none of the above​