When two objects collide perfectly inelastically, their total momentum remains constant but their velocities change since they combine into a single object with a different mass than either individual one did separately. This means that if we can find out what these new velocities are then we can easily calculate the value for v, which will be equal to both objects’ post-collision velocities since they have become one object moving together in that same direction at a single velocity.
To do so, we will use conservation of linear momentum which states that “if there is no external force acting on a system then total linear momentum is conserved; it does not change over time”. Therefore using our given data we can express this principle mathematically with: m1v1 + m2v2 = (m1+m2)v where v1 and v2 are our pre-collision velocities and m1 and m2 are our masses before collision respectively while v is our final post-collision velocity (since all masses combine into one thus having only one final velocity). We now need to solve for v so substituting in our data gives us: 42 kg⋅(10m/s) +25 kg⋅(0m/s) = (4.2 + 2.5)(V). Solving further yields V=7km/sec or 7000ms−1 as your answer!
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.Read more
Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.Read more
Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.Read more
Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.Read more
By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.Read more