Tuesday, August 10, 2010

Learning Activity #5

Review Questions

Work
2.A force sets an object in motion.When the force is multiplied by the time of its application, we call the quantity impulse, which changes the momentum of an object.What do we call the quantity does this change?
Answer:Work The exertion of a force and the movement of something by that force makes it change.

Mechanical Energy
8.Exactly what is it that energy is capable of doing?
Answer:Mechanical Energy
Exercises
12.Suppose an object is set sliding with a speed less than escape velocity on an infinite friction less plane in contact with the surface of the earth as shown.Describe its motion.(Will it slide forever at a constant velocity?Will it slide to a stop?In what way will its energy transfer be similar to that of a pendulum?
Answer:This means that the motion of said object which descending towards the surface or earth just like the movements of swing chair which move its swing repeatedly but its speed is not steady or permanent because its base upon the velocity or magnitude of the said object.