Question

troly ownloads/Examz_online.pdf Yahoo Finance - S... Khan Academy | F... 3 W3Schools Online.. Cengage Open c) At what point on the flat portion of the track does the mass come to rest? (5 pts) 4) The drawing below shows a collision between two pucks on an air hockey table. Puck A has a mass of 25 g and is moving along the x-axis with velocity of 5.5 m/s to the right. It makes a collision with puck B which has a mass of 50 g and is initially at rest. The collision is not head- on. After the collision, the two pucks fly apart with the angles shown in the drawing: +5.5 m/s At rest Before collision After collision a) What are the velocities of the pucks after the collision? (15 pts) b) .Is the collision elastic or inelastic (You must justify your answer using energy computations) (5 pts)

Answer 1

Answer:

: „DOVA 0,= 65° , q = 370, mar 25g mga sog, VA = 5.5m/s ; ug 20 ml 4) 6 5 4 | ontemno vb in 65 = 0, of za conservation momentum? using @ @ Jegoro mo Initial momenntung, La maison + movie ...7- (252103) (5:5) â agms = 0.1375 â kg mas - --- * - Final momentum, mn VA m . V of morg aner Now, or ip = ma lua caso, am + Upsine ay) + ( V Cos , , - , , , , , , , , Now, I = ? > 0.1375 atm = (mal a cash a mag Vos cash âm t (mav sine, - mau sind, ja Comparing, malla sind, - morosinaco - & maua caro, & mala costly = 0.BA5 - ② s using egn ® mille = masina 25 som egn 0 & agn @ we get mun coso, - (m. 14 singly ) costs – 0-1335 va 0.1375 Sinda sin va 0.1375 s JA 27 cos (65°) + 25x1oºx sh(os) cos(3> sin (37) cos o t masine, cosa ma - Sind 1. Ves - 3.38 mls Anmer

and ven = moveso sinch masinda 25* 3.38 x sin(68°) so x sin (370) va 2.54 mis Anomee (b) Initial kinetic Gnergy Kea 1 mausto = 2 x 28203 15:52 i ki? 0.3281 J or 378.17] final kinetic enengy, Kea 2 MANA2 e 2 mg o, kp - *25 100 ? x (3:39)2 + 1x 50 x2 ? x (2.5472 y = 0.3o41 J or 304. I mJ o Ki * & inelastic collision, It is an