Formula's And Equations

Question 1

Acceleration formula…

Answer 1

Acceleration = change in velocity
(divided by)
Time taken

Question 2

Force formula…

Answer 2

Force = Mass x Acceleration

F = m x a

Question 3

Weight formula…

Answer 3

Weight = Mass x Gravitational Field Strength

W = m x g

Question 4

Momentum formula…

Answer 4

Momentum = Mass X Velocity

P = m x v

Question 5

Change in Gravitational Potential energy formula…

Answer 5

Change in gravitational field strength = mass X gravitational field strength X change in vertical height

GPE = m X g X h

Question 6

Kinetic energy formula…

Answer 6

Kinetic energy = 1/2 X Mass X (Speed)2 (squared)

KE = 1/2 X m X v2

Question 7

Efficiency formula…

Answer 7

Efficiency =
(Useful energy)
—————-
(Total energy in)

Question 8

Wave speed formula…

Answer 8

Wave speed = Frequency X Wavelength

V = f X wv

Question 9

Wave speed formula without frequency and wavelength…

Answer 9

Wave speed = distance (divided by) time
X
V = —–
T