Question

Question 17 Akhtar, Kiran and Rahul were riding in a motorocar that was moving with 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.

Class 9 - Science - Force and Laws of Motion Page 129

Answer 1

HI !

The suggestion made by Kiran that insect suffered a greater change in momentum as compared to the change in momentum of the care is wrong.
The suggestion made by Akhtar is also wrong . [ motorcar was moving with a larger velocity, it exerted a larger force on the insect. ]

The explanation given by Rahul is absolutely correct !

When the insect collided with the motor car , same force was experienced.
This is because action and reaction are always equal and opposite.
Changes in their respective momenta [ plural of momentum] is also the same.

As the change in momenta are in two direction , only their sign changes but magnitude is same  !

Answer 2

hope this helps u plz mark it as brainlist.