Question

17. Akhtar, Kiran and Rahul were riding in a motorcar that
moving with a high velocity on an expressway when an insect
hit the windshield and got stuck on the windscreen.
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.



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Answer 1

I think the car has a grated momentum so the insect got stuck as momentum squats to mass x velocity so it’s change is momentum is less when compared to insect so I think Kiran is correct mark a brainliest thanks

Answer 2

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According to the law of conservation of momentum:

Momentum of the car and insect system before collision = Momentum of the car and insect system after collision

Hence, the change in momentum of the car and insect system is zero.

The insect gets stuck on the windscreen. This means that the direction of the insect is reversed. As a result, the velocity of the insect changes to a great amount. On the other hand, the car continues moving with a constant velocity. Hence, Kiran’s suggestion that the insect suffers a greater change in momentum as compared to the car is correct. The momentum of the insect after collision becomes very high because the car is moving at a high speed. Therefore, the momentum gained by the insect is equal to the momentum lost by the car.

Akhtar made a correct conclusion because the mass of the car is very large as compared to the mass of the insect. Rahul equal to the momentum after the collision.

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