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WorksheetsG9: Energy, Equations & Units
Total questions: 14
Worksheet time: 7mins
What is the following equation: Ep = mgh
Mechanical energy
Gravitational potential energy
Kinetic Energy
Power
What are the units for the following equation: Ep = mgh
Ep = Newtons
m = grams
g = m/s2
h = metres
Ep = Joules
m = kg
g = m/s2
h = metres
Ep = Watts
m = kg
g = m/s
h = metres
Ep = Joules
m = kg
g = m/s
h = metres
What is the following equation: Ek = ½ mv2
Mechanical energy
Gravitational potential energy
Kinetic Energy
Work
What are the units for the following equation: Ek = ½ mv2
EK = Newtons
m = grams
v = m/s2
EK = joules
m = kg
v = m/s
EK = Newtons
m = kg
v = m/s
EK = Joules
m = kg
v = m/s2
What is the following equation: W = Fs
Mechanical energy
Force
Work
Power
What are the units for the following equation: W = Fs
W = Joules
F = Newtons
s = metres
W = Joules
F = Watts
s = metres
W = Joules
F = Newtons
s = m/s2
W = Newtons
F = Watts
s = hours
What is the following equation: P = W/t
Kinetic energy
Force
Work
Power
What is another way of describing Power (watts)?
P = W/t
Joules per second
Acceleration
Newtons per second
kilowatt hors
What are the units for the following equation: P = W/t
P = Watts
W = Joules
t = seconds
P = Joules
W = Watts
t = seconds
P = Watts
W = Joules
t = Metres per second
P = Watts
W = kWh
t = seconds
What is the formula for energy efficiency (%)?
Output Energy / Input Energy
x 100
Ep = mgh
W = Fs
P = W/t
Ek = ½ mv2
What is the formula for Work
Output Energy / Input Energy
x 100
Ep = mgh
W = Fs
P = W/t
Ek = ½ mv2
What is the formula for kinetic energy?
Output Energy / Input Energy
x 100
Ep = mgh
W = Fs
P = W/t
Ek = ½ mv2
What is the formula for gravitational potential energy?
Output Energy / Input Energy
x 100
Ep = mgh
W = Fs
P = W/t
Ek = ½ mv2
What is the formula for power?
Output Energy / Input Energy
x 100
Ep = mgh
W = Fs
P = W/t
Ek = ½ mv2
