Kinetic Energy
What is kinetic energy?
The energy an object has due to its motion.
What is potential energy?
Mechanical energy involves ______ and ______ of an object
Position and motion
A guy is walking his dog. He stops at a stop sign. What type of energy does he have?
Mechanical energy
KE= 1/2mv^2
Due to it's position and shape
What is an example of mechanical energy?
Answers may vary
A runner is stretching and getting ready for a race. What type of energy does he contain?
Mechanical energy
What is the kinetic energy of a rollercoaster moving at a velocity of 25 m/s and a mass of 40?
12,500 J
Gravitational and elastic potential energy
What is mechanical energy?
Potential energy and kinetic energy combined
What type of energy does a trampoline have when you are standing on it?
Elastic energy
What is the opposite of KE?
True or false: Gravitational energy is energy of an object that is in space
False, gravitational energy is the stored energy an object possesses due to its position in a gravitational field
Any object with _________________ can do __________ on another object.
On top of a roller coaster, which energy do you have?
Gravitational potential energy
What affects KE the most and WHY?
Velocity quadruples KE because it is squared
What is elastic energy?
Energy stored in an elastic material
True or false: Mechanical energy involves elastic potential energy and kinetic energy
True, when you jump, your kinetic energy is transformed into elastic potential energy as the trampoline's surface and springs stretch, and this stored energy is then converted back into kinetic energy, launching you upward. This process of energy transfer, from kinetic to potential and back again, is why you bounce.
What's an example of kinetic energy?
Answers may vary