Question

Cite your answer in Sl units and to three significant figures. D Question 1 5 pts Two ice pucks (one orange and one blue) of equal mass are involved in a perfectly elastic glancing collision as shown in the figure below. The orange puck is initially moving to the right at Vol 6.0 m/s.strikes the initially stationary blue puck, and moves off in a direction that makes an angle of - 24° with the horizontal axis while the blue puck makes an angle of with this axis as in figure (b). Note that for an elastic collision of two equal masses, the separation angle 8 + 6 - 90.0°. Determine the speed of the orange puck after the collision Before collision Aer collision

Answer 1

Let m be the mass of the two balls. Here, Voi = 6 m/s 0 = 24° p= go - 24° = 66 Now, applying momentum conservation along x-direction, mvoi = m Var cose + m Vbg cos & + 6 = Vof cos 240 + Vbf cos 660 Applying momentum conservation along y-direction, : O= A V of sino + mv bf sind - Vor sin 24 + Vbf sin 66° 0 - Vbf = - Vos sinago sincro Putting this Vos in egr 6= Vot cus24o - , Vos sinzao smero X Cos610 4 & [cos 24 – cat 66 sin240] Vos = 6 Vol 032 = 8. 197 m/s : speed of the orange . puck after collisim, Vot = 8.197 m/s. (And).