# sosi

This is the case of oblique elastic collision.

Let the first ball have velocity initial velocity before the collision = u and final velocity after the collision = v at 30.9° above the horizontal

and the second ball have velocity w after the collision at an angle θ below the horizontal.

By the law of conservation of linear momentum applied in the vertical direction,

vsin(30.9°) = wsinθ … (1) [mass of both the balls being equal cancel out]

Applying the law of conservation of momntum in the horizontal direction,

u + 0 = vcos(30.9°) + wcosθ

=> u – vcos(30.9°) = wcosθ … (2)

Squarring and adding eqns. (1) and (2),

u^2 + v^2 – 2uvcos(30.9°) = w^2 … (3)

For elastic collision, kinetic energy is also conserved

=> (1/2) mu^2 = (1/2)mv^2 + (1/2)mw^2

=> u^2 = v^2 + w^2

=> u^2 – v^2 = w^2 … (4)

Subtracting eqn. (4) from (3),

2v^2 – 2uvcos(30.9°) = 0

=> v = ucos(30.9°)

=> Kinetic energy of the first ball after the collision

= (1/2) mv^2

= (1/2) * (0.200) * ucos(30.9°)

= (0.100) * √(294) cos(30.9°) … [plugging the value of u obtained in the first step]

= 1.47 J.

Calculate the price
Pages (550 words)
\$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with Lets Write For You
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
11,595
Customer reviews in total
96%
Current satisfaction rate
3 pages
Average paper length
37%
Customers referred by a friend