Question

Assignment 8 - Edfinity Assignment 8 Two identical pucks collide elastically on an air hockey table. Puck 1 was originally at rest; puck 2 has an incoming speed of 6 m/s and scatters at an angle of 60' with respect to its incoming direction. What is the velocity (magnitude and direction) of puck 1 after the collision? Measure the direction counterclockwise from the positive x-axis. Help on how to format answers: units degrees.

Answer 1

Before collision Lonsemration of n momentum x direchion U=6ms 2 mu =mucosO muz cos 60 After collision 2 6 = V,Cos B+ 0.5 V 600 (12-207 cs ) 2 (6-Coso) momentum consernahian along yaxis muz sin 60°- mu, sine = o sin Con60S Sin 600 Sin6o- fom 2 6 JS sinocos) 2 sin e CSin0+c) Elashic collision, Consenahon ot enngy / mu m+mu u + v 2 6 J5 12 sin 2 sin+ o Sine ts Cose

108 t 144 sinke 36 (sine+ core) sin e3ae25 sin0 Cos= 3 +4 sin e 3 sin20 = 3 +3 sin 0- 3co20 3 3 cog28 31-cont2e Suaning bolh sidas 3(1-ca 26) =9 9 Cos 20 -18cos20 - 3 con28 + = D Setuiry we get e= 30° V, 6 J5 sin 30 La30 Sin 30° C30 5.2 mIs Andwen V= S.2mls Can be 30 r ISo r 210 or 330 on uohat co-ondinat systems depending choosen. Since it not clear whih vay puck 2 wie scatter 11