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SEI Introductory Physics: Work, Energy, and Power
Terms in this set (20)
the energy an object has due to its motion. Based on an object's mass and velocity
Total Mechanical Energy
the sum of kinetic and potential energy
Gravitational Potential Energy
Energy stored by objects due to their position above Earth's surface and mass.
Law of Conservation of Energy
the law that states that energy cannot be created or destroyed but can be changed from one form to another
A result of a force moving an object a certain distance.
the rate at which work is done
Force and displacement are in the same direction
a force applied opposite to motion
Formula for GPE
GPE = mgh
Formula for KE
KE = 1/2 mv2
Formulas for Work
W = Fd and W = mgh
Formula for Power
P = W/t
A 10.0 N force is applied to push a block across a friction free surface for a displacement of 5.0 m to the right. How much work was done on the box?
A 2.0 kg box is sitting on a shelf 2.0 m above the ground. How much work was done to lift the box? How much work was done on the box?
Evelyn carries a 20.0 kg suitcase up three flights of stairs (a height of 10.0 m) and then pushes it across the floor with a force of 50.0 N for a distance of 35.0 meters. How much work does Evelyn do on this suitcase during the entire motion?
A leopard with a mass of 55.0 kg climbs 12.0 m up into a tree. What is its gain in GPE?
What is the Kinetic Energy of a 150 kg object that is moving with a speed of 15 m/s?
What is the Kinetic Energy of a car is traveling with a velocity of 40.0 m/s and has a mass of 1120 kg.
What is the GPE of a 12.4 kg block that is sitting on a platform 20.0 m above the ground?
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