EOY Flashcards
1
Q
acceleration and unit
A
change in velocity / time or v/t (m/s^2)
2
Q
acceleration of free fall
A
weight/mass or W/m (m/s^2)
3
Q
%efficiency
A
useful energy; power output/useful energy; power input x 100%
4
Q
kinetic energy and unit
A
1/2mv^2 (J)
5
Q
gravitational potential energy and unit
A
mgh (J)
6
Q
momentum and unit
A
mass x velocity or mv (kgm/s)
7
Q
speed and unit
A
d/t (km/h, m/s)
8
Q
specific heat capacity and unit
A
c= change in energy/ mass x change in temp. (J/kg degrees celsius)
9
Q
power
A
work/time or change in energy/ time (W)
10
Q
wave speed
A
v= f λ
11
Q
frequency
A
1/T (period)
12
Q
period
A
1/F
13
Q
work and unit
A
force x distance (J)
14
Q
change in pressure (in liquids) and unit
A
density x gravity x depth or pgh (N/m^2)
15
Q
impulse
A
Force x change in time ; impulse = change in momentum
