Physics T1 - Average speed, Acceleration, Velocity, Resistance

average speed (displacement) formula

total distance travelled
——————————
total time taken

unit for speed

m/s

velocity formula

displacement (s) s
——————— = ——-
time taken (t) t

velocity

speed in a given direction

positive velocity

→when an object is moving forward

negative velocity

→when an object is moving backwards

unit for velocity

m/s

acceleration formula

change in velocity initial velocity (v) - final (i)
———————— = ———————————-
time taken time taken (t)

unit for acceleration

metres per second squard = (m/s²)

positive acceleration

increase in velocity

negative acceleration

decrease in velocity (deceleration)

resistance formula

voltage
———-
current

unit for resistance

ohms(Ω)