Car A has a mass of 450 g and is travelling at 2.25 m s–1. Car B has a mass of 350 g and is travelling in the opposite direction at 2.75 ms–1. (Define left to be the positive x-direction.) Unless directed in this question, do not round your answers. a) What is the momentum of car A (Units: kgm/s)? (b) What is the momentum of car B (Units: kgm/s)? (c) What is the total momentum of the two cars before the collision? (Units: kgm/s)
Two toy cars are about to collide!
Car A has a mass of 450 g and is travelling at 2.25 m s–1. Car B has a mass of 350 g and is travelling in the opposite direction at 2.75 ms–1. (Define left to be the positive x-direction.) Unless directed in this question, do not round your answers.
a) What is the momentum of car A (Units: kgm/s)?
(b) What is the momentum of car B (Units: kgm/s)?
(c) What is the total momentum of the two cars before the collision? (Units: kgm/s)
(d) Straight after the collision they stick together but are still moving. What direction are they moving in, left or right?
(e) What is the kinetic energy before and after the collision? Round your answers to whole integers. (Units: milijoules)
Before = mJ
After = mJ
(f) In this situation, was energy (E), momentum (p) or both (BOTH) conserved? {Give your answer by the term in brackets.}
![](/static/compass_v2/shared-icons/check-mark.png)
Step by step
Solved in 2 steps with 2 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
![Principles of Physics: A Calculus-Based Text](https://www.bartleby.com/isbn_cover_images/9781133104261/9781133104261_smallCoverImage.gif)
![Glencoe Physics: Principles and Problems, Student…](https://www.bartleby.com/isbn_cover_images/9780078807213/9780078807213_smallCoverImage.gif)
![College Physics](https://www.bartleby.com/isbn_cover_images/9781938168000/9781938168000_smallCoverImage.gif)
![Principles of Physics: A Calculus-Based Text](https://www.bartleby.com/isbn_cover_images/9781133104261/9781133104261_smallCoverImage.gif)
![Glencoe Physics: Principles and Problems, Student…](https://www.bartleby.com/isbn_cover_images/9780078807213/9780078807213_smallCoverImage.gif)
![College Physics](https://www.bartleby.com/isbn_cover_images/9781938168000/9781938168000_smallCoverImage.gif)
![Modern Physics](https://www.bartleby.com/isbn_cover_images/9781111794378/9781111794378_smallCoverImage.gif)
![University Physics Volume 1](https://www.bartleby.com/isbn_cover_images/9781938168277/9781938168277_smallCoverImage.gif)
![Physics for Scientists and Engineers: Foundations…](https://www.bartleby.com/isbn_cover_images/9781133939146/9781133939146_smallCoverImage.gif)