potential energy
An object's height and mass is needed to find its _______ potential energy.
What is GRAVITATIONAL potential energy?
T/F: A ball rolling down the hill has KE.
True
energy is measured in
What is joules
What is POTENTIAL & KINETIC?
Energy found in food transforms from __ to __.
What is CHEMICAL to MECHANICAL?
Potential energy due to an objects shape when it is stretched or compressed
What is ELASTIC potential energy
T/F: A ball that is about to roll down a hill has more KE than a bike rolling down a hill
FALSE
true or false the faster something moves the more kinetic energy it has
What is true
This energy transformation occurs in a toaster?
What is ELECTRIC to THERMAL.
When a force is being used to move an object, it is called __.
What is WORK?
Define potential energy.
What is energy that is stored in a person or object?
Define kinetic energy.
Energy an object possesses due to its movement
the force that brings objects to the ground
What is gravity
Describe a conversion from elastic potential energy to mechanical energy?.
One possible answer: jumping on a trampoline.
Describe the relationship between potential & kinetic energy.
When potential energy increases, kinetic energy decreases. When kinetic energy increases, potential energy decreases.
A cartoon character places an anvil on a platform that is 35 m high. The anvil has a mass of 9 kg.
A dog with a mass of 42 kg is running through a field at a velocity of 13 m/s.
What is 3549 J.
This property affects kinetic energy more than the other.
What is VELOCITY?
A light bulb converts ___ to ___ & ___.
ELECTRICAL energy to RADIANT (LIGHT) energy & THERMAL energy.
Mass & velocity have a __ relationship with kinetic energy.
What is PROPORTIONAL?
List the types of potential energy we discussed in class.
What are GRAVITATIONAL, ELASTIC, CHEMICAL, & NUCLEAR. Remember that potential energy is a part of mechanical energy, too.
What is the formula for KE?
KE=(1/2)mv^2
At the top of a hill on a rollercoaster, the rollercoaster has maximum _______. On the way down the hill the ______ turns into ______. At the bottom of the hill, the rollercoaster has maximum ________.
What is PE, PE, KE, and KE?
State the law of conservation of energy.
Energy cannot be created or destroyed, but it can be transferred from one object to another & change forms.
One Joule is equal to ___.
What is ONE NEWTON/METER?