Mechanics: Equations Flashcards
Energy is measure in what units?
Joules, J
Work is measure in what units?
Joules, J
Weight is measured in what units?
Newtons, N
Force is measure in what units?
Newtons, N
Power is measure in Js-1 or other what units?
Watts, W
What units would be used in this formula P = E / t?
P in Watts (W), E in Joules (J) and t in seconds (s)
What units would be used in this formula W = F x d?
W in Joules (J), F in Newtons (N) and d in metres (m)
What units would be used in this formula EK = ½m v2?
E in Joules (J), m in Kilograms (kg) and v in ms-1
What units and quantity would be used in this formula EP = m g h?
E in Joules (J), g = 10m/s/s, h in metes (m)
v = Δd/ΔT
What units are used in this formula?
v = ms-1, d = m, metres, t = s, seconds
Fnet = ma
What are the units of this formula?
F in N, Newtons, m in kg, kilograms, a in ms-1
a = Δv/Δt
What are the units of this formula?
a in ms-2, v, speed in ms-1,t, time in s, seconds
Fgravity = mg
What are the units and quantities of this formula?
F = N, Newtons, m = kg, kilograms, g = 10 ms-2
g = 10 ms-2
What is g?
Acceleration due to gravity
g = 10 N kg-1
What is g?
The force per kg of mass
What does Fnet mean?
Net/overall force
How do you convert kJ into J or kW into W?
Multiply by 1000