physics equations unit 1-4 Flashcards
1
Q
efficiency = ?
A
useful energy output / total energy input x 100
2
Q
weight = ?
A
mass x gravitational potential (10)
3
Q
work done = ?
A
force x distance
4
Q
gravitational potential energy = ?
A
mass x gravitational field x height
5
Q
kinetic energy = ?
A
1/2 x mass x speed^2
6
Q
speed = ?
A
distance / time
7
Q
velocity = ?
A
displacement / time
8
Q
acceleration = ?
A
final velocity - initial (starting) velocity / time
9
Q
final velocity = ?
A
initial velocity + acceleration x time
10
Q
average speed = ?
A
initial velocity + final velocity / 2
11
Q
final velocity ^2 = ?
A
initial velocity^2 + 2 x acceleration x distance
12
Q
force = ?
A
mass x acceleration
13
Q
weight = ?
A
mass x gravity
14
Q
velocity = ?
A
wavelength x frequency
15
Q
angle of incidence = ?
A
angle of refraction
