Physics- Work and Energy Flashcards
1
Q
Work equation
A
W=Fd
2
Q
work equation for when speed is constant (hint Ke)
A
W=Ke=1/2mV^2
3
Q
Kinetic energy equation
A
Ke=1/2mV^2
4
Q
conservation of energy formula : total mechanical energy (hint Pe and Ke)
A
1/2mV^2 + mgh
Et= Ke + Pe
5
Q
perpendicular force for work equation
A
W=FdCosx
6
Q
potential energy : electrostatic forces equation
A
Pe= K(q1q2/r^2)
7
Q
potential energy : attractive forces equation
A
Pe=Gm1m2/r
8
Q
potential energy : gravitational forces equation
A
Pe=mgh
9
Q
potential energy : elastic forces equation
A
Pe=1/2Kx^2
10
Q
Power formula: general
A
P=FV, force x velocity
11
Q
Power formula: w/ relation to work
A
P=delta W/ delta T, work / time
12
Q
work and energy units
A
Joules
13
Q
Power units
A
watts
