VA₂ PLANE OF CONTACT ÚB₂ X A B 0 m m velocity = 1.52 On an air hockey table, two pucks of identical mass collide in the middle of the rink. Puck A had an initial and puck B had an initial velocity B = 3.1 according to the x-y axis shown. The plane of contact can be thought of as a line angled 0 = 32° above the x-axis. If the coefficient of restitution is e = 0.41 between the pucks, what are the velocities of the pucks after the impact? s i+ i+ m S m Ⓒ 0 UBC Engineering S

Packaging for apples is tested using a machine that exerts accelaration components ay = 10 m/s2 and  ax = 5 m/s2, simultaneously.      Select the correct FBD and kinetic diagram for this condition.   A.     B.     C.     D.

A pitching machine throws the 0.5-kg ball toward the wall m/s as shown. Suppose that the coefficient of restitution e = 0.5, a = 4 m, h = 1.3 m. (Figure 1) with an initial velocity v = 12 Figure S h 30° B 1 of 1 > Part A Determine the magnitude of the velocity at which it strikes the wall at B. Express your answer to three significant figures and include the appropriate units. (VB)1 = Submit Part B 0₁ μA || Value Request Answer Determine the angle between the x axis and the velocity at which the ball strikes the wall, measured counterclockwise from the positive x axis. Express your answer using three significant figures. -- ΑΣΦ ↓↑ Units vec ? Ć ?

Figure m OA 2 m 1.5 m 6 m/s 3 m 2m 0 1.5m B 3 m 2m 1m 1 of 1 Part A Determine the x, y, z components of the angular momentum Hp of the particle having a mass of m = 4.8 kg about point P using scalar notation. (Figure 1) Express your answers using three significant figures separated by commas. ¯ ΑΣΦ | | (Hp)z. (Hp)y, (Hp)₂ = 7.16,7.16, 12.5 Submit Previous Answers Request Answer X Incorrect; Try Again; 8 attempts remaining Provide Feedback G Doorgon vec ? kg m²/s Next >

Two smooth disks A and B have the initial velocities shown just before they collide. They have masses mA = 6 kg and mg = 2 kg. The coefficient of restitution is e = 0.8. (Figure 1) Part A Determine the speed of A just after impact. Express your answer to three significant figures and include the appropriate units. μΑ ? (vA)2 = Value Units Figure 1 of 1 Submit Request Answer Part B 4 3 Determine the speed of B just after impact. A Express your answer to three significant figures and include the appropriate units. VA = 15 m/s В µA ? (vB)2 = Value Units VB = 8 m/s Submit Request Answer

The linearized equations of perturbed longitudinal motion are given (in SI units) by: q=0.65 q- 0.2 ȧ - a - 1.2 SE ù = 225.0 8th + 0.035 a − 9.810 – 0.18 u ȧ = q − 0.2 u — 0.6 α — 0.035 SE 8 = 9 (a) Determine the equilibrium flight speed of the aircraft. (b) Calculate the transfer function relating changes in forward speed to changes in thrust. ISSAR LG

Determine the coefficient of restitution e for a steel ball dropped from rest at a height h above a heavy horizontal steel plate if the height of the second rebound is h2. Can someone please explain to me how the book is getting that equation?