Physics T1 - Average speed, Acceleration, Velocity, Resistance
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13 Terms
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)
