The force as a function of displacement of a moving object is presented by the graph. How much work is done when the object moves from 0 m to 8 m? A. 30 J B. 15 J C. 18 J D. 9 J E. 20 J An applied force F accelerates an object from rest to a velocity v. How much work is done by the applied force F? A. ½ mv2 B. mgh C. ½ kx2 D. mFd E. Zero What happens to the kinetic energy of a moving object if the net work done is positive? A. The kinetic energy increases B. The kinetic energy decreases C. The kinetic energy remains the same D. The kinetic energy is zero E. The kinetic energy becomes negative A block of mass m = 50 kg moves on a rough horizontal surface with a coefficient of kinetic friction µ = 0.5. The traveled distance is 20 m. How much work is done by the friction force? A. 1000 J B. 2000 J C. 3000 J D. 4000 J E. -5000 J What happens to the gravitational potential energy of a moving object if the work done by the gravitational force is negative? A. The potential energy increases B. The potential energy decreases C. The potential energy remains the same D. The potential energy is zero
The force as a function of displacement of a moving object is presented by the graph. How much work is done when the object moves from 0 m to 8 m? A. 30 J B. 15 J C. 18 J D. 9 J E. 20 J An applied force F accelerates an object from rest to a velocity v. How much work is done by the applied force F? A. ½ mv2 B. mgh C. ½ kx2 D. mFd E. Zero What happens to the kinetic energy of a moving object if the net work done is positive? A. The kinetic energy increases B. The kinetic energy decreases C. The kinetic energy remains the same D. The kinetic energy is zero E. The kinetic energy becomes negative A block of mass m = 50 kg moves on a rough horizontal surface with a coefficient of kinetic friction µ = 0.5. The traveled distance is 20 m. How much work is done by the friction force? A. 1000 J B. 2000 J C. 3000 J D. 4000 J E. -5000 J What happens to the gravitational potential energy of a moving object if the work done by the gravitational force is negative? A. The potential energy increases B. The potential energy decreases C. The potential energy remains the same D. The potential energy is zero