Chapter 2: Work, energy and power Flashcards
1
Q
Equation for work done against gravity
A
mgh
2
Q
Equation for work done and units
A
F x d (in same direction)
Units: Nm/J
3
Q
Kinetic energy equation
A
1/2mv^2
4
Q
Gpe equation
A
mgh
5
Q
What is the relationship between work done and change in ke
A
Work done = change in KE
6
Q
What is the work-energy principle?
A
The change in total energy of a particle is equal to the work done on a particle
7
Q
What is the principle of conservation of mechanical energy?
A
The sum of the particles kinetic and potential energy remains constant if there are no external forces
8
Q
Power of a vehicle formula
A
Power = Fv
