Akhtar, Kiran and Rahul were riding in a motorcar that was a high velocity on an expressway when an insect hit the windshield and got stuck on the windscreen . Akhtar and Kiran started pondering over the situation. Kiran suggested that the insect suffered a greater change in momentum as compared to the change in momentum of the motorcar (because the change in the velocity of the insect was much more than that of the motorcar). Akhtar said that since the motorcar was moving with a larger velocity, it exerted a larger force on the insect. And as a result, the insect died. Rahul while putting an entirely new explanation said that both the motorcar and the insect experienced the same force and a change in their momentum. Comment on these suggestions.

Explanation

(a) Kiran's suggestion that the insect suffered a greater change in momentum as compared to the change in momentum of the motorcar is wrong
(b) Akhtar's suggestion that since the motorcar was moving with a larger velocity, it exerted a larger force on the insect, is also wrong
(c) Rahul's explanation that both the motorcar and the insect experienced the same force and same change in their momentum is correct. Both experience the same force because the action (force) and reaction (force) are always equal and opposite. Moreover, the magnitude of change in their momenta is also the same (though the change in momenta occur in opposite directions).