An inflatable airbag helmet for cyclists has been designed to prevent head injuries.
It is worn like a scarf around the neck. In-built sensors detect when the cyclist is
involved in a crash and inflate the airbag over the cyclist’s head in 0.1 s.
The graph shows how the force on a cyclist’s head during a collision varies with time
when an airbag is not used.
Add to the axes, the graph that shows how the force on a cyclist’s head during a
collision varies with time when the airbag is used.
Justify the shape of your graph.
Graph drawn:
has a smaller maximum force
the change is over a longer time
Justification:
With airbag the rate of change of momentum is smaller
Or acceleration is smaller
Or Area(s) under graph(s) the same (accept impulse the same)
