Physics Formulae

Question 1

Calculate distance travelled

Answer 1

distance travelled (m) = speed (m/s) x time (s)

Question 2

Calculate average speed

Answer 2

average speed (m/s) = total distance (m)/ total time (s)

Question 3

Calculate velocity

Answer 3

velocity = displacement/ time

Question 4

calculate acceleration

Answer 4

acceleration (m/s^2) = final velocity (m/s) - initial velocity (m/s) / time (s)

Question 5

Calculating speed from graph (check p.54 if you forget)

Answer 5

speed = change in distance / time

Question 6

calculating velocity from a graph

Answer 6

velocity = change in displacement/ time

Question 7

Equation of motion

Answer 7

(final velocity (m/s)^2) - (initial velocity (m/s^2)) = 2 x acceleration (m/s^2)x distance (m)

Question 8

Calculating Kinetic Energy

Answer 8

Kinetic energy (J) = 0.5 x mass (kg) x (speed(m/s))^2

Question 9

Calculating Speed from Kinetic Energy

Answer 9

speed = square root symbol kinetic energy /0.5 x mass

Question 10

how to calculate charge flow

Answer 10

Charge flow (coulombs) = Current (Amperes) x Time (Seconds)

Question 11

How to calculate wave velocity

Answer 11

Wave velocity (m/s) = Frequency (Hz) x Wavelength (m) ** wavelength is always in m**

Question 12

How to calculate frequency

Answer 12

wave speed/wave length = frequency