VII. Energy Flash Cards

 1. A 0.65-meter-long pendulum consists of a 1.0-kilogram mass at the end of a string. The pendulum is released from rest at position A, 0.25 meter above its lowest point. PE is maximum at ____ ____   KE is maximum at ____ The total energy as the pendulum swings to the right side ___ PE is maximum at and KE is maximum at   The total energy as the pendulum swings to the right side 2. The diagram below shows block A, having mass 2m and speed v, and block B having mass m and speed 2v. Compared to the kinetic energy of block A, the kinetic energy of block B is (1) the same (2) twice as great (3) one-half as great  (4) four times as great 3a) When work is done on or by a system, there is a change in the total _____of the system.3b) Power is the time-rate at which _____is done or _____ is expended. a) b) 4.  A girl rides an escalator that moves her upward at constant speed. As the girl rises, how do her gravitational potential energy and kinetic energy change? (1) Gravitational PE decreases and KE decreases. (2) Gravitational PE decreases and KE remains the same. (3) Gravitational PE increases and KE decreases. (4) Gravitational PE increases and KE remains the same

Energy Flash Cards

 5a) Potential energy is the energy an object possesses by virtue of its _____ or _____. 5b) Kinetic energy is the energy an object possesses by virtue of its _____. a) or b) 6.  Which action would require no work to be done on an object? (1) lifting the object from the floor to the ceiling (2) pushing the object along a horizontal floor against a frictional force (3) decreasing the speed of the object until it comes to rest (4) holding the object stationary above the ground