Different everyday situations involve extending the duration of impact to lessen…
PHYSICS · Multi-part · ISC · Physics · Laws of Motion · Laws of Motion
Problem
Different everyday situations involve extending the duration of impact to lessen harmful forces.
(i) Identify any two safety devices that operate on the principle of increasing the time of impact.
(ii) Arrange the following three scenarios in order of increasing average impact force, assuming the same change in momentum occurs in each case:
(a) stopping time 0.010s,
(b) stopping time 0.035s,
(c) stopping time 0.002s.
(iii) Explain the reasoning behind the order chosen in part (ii) without performing detailed numerical calculations.