#P8.1a
recall typical speeds encountered in everyday experience for wind and sound, and for walking, running, cycling and other transportation systems
#P8.1b
estimate the magnitudes of everyday accelerations
#P8.1c
make calculations using ratios and proportional reasoning to convert units and to compute rates
conversion from non-SI to SI units
#P8.1d
explain methods of measuring human reaction times and recall typical results
#P8.1e
explain the factors which affect the distance required for road transport vehicles to come to rest in emergencies and the implications for safety
factors that affect thinking and braking distance and overall stopping distance
#P8.1f
estimate how the distances required for road vehicles to stop in an emergency, varies over a range of typical speeds
#P8.1g
explain the dangers caused by large decelerations
#P8.1h
estimate the forces involved in typical situations on a public road
#P8.1i
estimate, for everyday road transport, the speed, accelerations and forces involved in large accelerations