Answer the following questions about the effect of contact time on the force…
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Answer the following questions about the effect of contact time on the force experienced during a collision.
(i) Two identical constant forces act separately on a table-tennis ball and on a cricket ball, each moving with the same initial velocity. Which ball will come to rest first? Give reasons based on the concept of change in momentum.
(ii) An automobile designer claims that increasing the time for a car to come to rest during a crash will lessen the force on passengers. Using the relationship between force, change in momentum, and time, provide a qualitative explanation to support or refute the designer’s claim.