Physics Test 2 Flashcards
1
Q
Kinetic Energy Formula
A
1/2mv^2
2
Q
Gravitational Energy Formula / Potential Energy Formula
A
mgh
3
Q
Work Formula with Kinetic Energy
A
1/2mvf^2 - 1/2mvi^2
4
Q
Work Formula with Force and Distance
A
Force * displacement * cos(theta)
5
Q
Power Formula
A
Work / time
6
Q
Energy in a closed system
A
KEi + GPEi = KEf + GPEf
7
Q
Sign of work if force is in the direction of motion
A
Positive
8
Q
Sign of work if force is in the opposite direction
A
Negative
9
Q
Sign of work if motion is 90 degrees
A
Neither, there is no work done.
10
Q
Newton’s first law
A
An object in “uniform motion” stays in uniform motion unless acted on by an unbalance force.
11
Q
Newton’s third law
A
When two objects interreact, they each exert a force on the other. Those forces are equal in magnitude and opposite in direction
