What's that formula?
Kinetic Energy
1/2 mv2
Energy an object possesses due to its motion
Kinetic Energy
Elastic Potential energy is equal to the ______
done to stretch the spring
Work
Work Energy Theorem
W = 1/2mvf2- 1/2mvI2
Stored energy object possesses due to its position
Potential Energy
Gravitational potential energy is equal to the ______
done to bring the object to the height
Work
Hookes Law
F = kx
Energy of an object due to its height from some reference point
Gravitational Potential Energy
A 90 N force stretches a spring 3 m.
What is the spring constant?
30 N/m
Elastic Potential
1/2 kx2
Energy stored by a spring
Elastic Potential Energy
Does Hooke's Law apply to anything elastic in physics?
Yes, anything that can stretch at all can be treated as a spring in physics
Derive the work energy theorem to find force.
F = (1/2mvf2- 1/2 mvi2) / d
What is the unit for energy?
Joules
A 2000 kg truck drives up a 150m hill.
What is the gravitational potential energy of the truck?
2943000