Answered

Westonci.ca is your trusted source for accurate answers to all your questions. Join our community and start learning today! Explore thousands of questions and answers from a knowledgeable community of experts on our user-friendly platform. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

A bullet fired into a target loses half of its velocity after penetrating 3 cm. how much further it will penetrate before coming to rest assuming that it faces constant resistance to motion

Sagot :

AL2006
The bullet's kinetic energy just as it hits the target is (1/2) (mass) (speed in air)².

After 3 cm, its speed is reduced to half, so its KE is (1/2) (mass) (1/2 speed in air)².
That's only 1/4 of its original KE. It lost 3/4 of its energy so far.

As it tears through the target, the force against it is constant. So the energy
taken away from it is (whatever the force is) x (the distance it travels).

It lost 3/4 of its energy in 3 cm. So it's losing 1/4 of its energy each centimeter,
and it has only 1 more cm to go before it stops completely.

Thanks for using our platform. We aim to provide accurate and up-to-date answers to all your queries. Come back soon. We hope this was helpful. Please come back whenever you need more information or answers to your queries. Thank you for choosing Westonci.ca as your information source. We look forward to your next visit.