P8.1 Flashcards
what are the different ways to measure speed?
-electronic timing
-speed gun
-sat nav
-wheel sensor
-speed camera
what are the different ways to measure distance?
-wheel diameter
-trundle wheel
-tape
-calculate from reflected beam
-comparing between satellites
what are the different ways to measure time?
-time between photos of a speed camera
-electronic timer
-time between pulses of a speed gun
-pressure sensor laser beam
-magnetic sensors
what are the suitable measuring techniques to measure a 100m sprinter?
speed: electronic timing
distance: tape
time: pressure sensor/laser beam
what are the suitable measuring techniques to measure a car on the road?
speed: speed gun
distance: calculated from reflected beam
time: time between pulses
what are the other suitable measuring techniques to measure a car on the road?
speed: speed camera
distance: trundle wheel
time: time between photos
what are the suitable measuring techniques to measure a cyclist?
speed: wheel sensor
distance: wheel diameter
time: magnetic sensors
what are the suitable measuring techniques to measure anything?
speed: sat nav
distance: comparing between satellites
time: electronic timer
what’s the equation for average speed?
average speed = total distance / time
what is the typical speed (in m/s) of a person walking?
1m/s
what is the typical speed (in m/s) of a person running?
5m/s
what is the typical speed (in m/s) of a cyclist?
7m/s
what is the typical speed (in m/s) of an olympic cyclist?
20m/s
what is the typical speed (in m/s) of a strong wind?
13m/s
what is the typical speed (in m/s) of a car?
22m/s
