VB VA 20°

One of the requirements for tennis balls to be used in official competition is that, when dropped onto a rigid surface from a height of 100 in., the height of the first bounce of the ball must be in the range 53 in. ≤ h ≤ 58 in. Determine the range of the coefficients of restitution of the tennis balls satisfying this requirement.

The two disks A and B have a mass of 4 kg and 5 kg, respectively. They collide with the initial velocities shown. The coefficient of restitution is e = 0.7. Suppose that (VA)1 = 6 m/s, (VB)₁ = 7 m/s. (Figure 1) Determine the magnitude of the velocity of A just after impact. Express your answer to three significant figures and include the appropriate units. με ? (VA)2= Value Units igure (VB)1 B (VA)1 60° Line of impact Submit Request Answer Part B Determine the angle between the x axis and the velocity of A just after impact, measured clockwise from the negative x axis. Express your answer in degrees to three significant figures. ΜΕ ΑΣΦ Η vec 0₁ = 1 of 1 Submit Request Answer Part C ? Determine the magnitude of the velocity of B just after impact. Express your answer to three significant figures and include the appropriate units. HÅ ? (VB)2= Value Units

The 0.5-kg ball is fired from the tube at A with a velocity of v = 7 m/s. The coefficient of restitution between the ball and the surface is e = 0.8. Suppose that a = 1.5 m. (Figure 1) Figure a 30° B Part A Determine the height h after it bounces off the surface. Express your answer to three significant figures and include the appropriate units. h = Submit ■ O ΜΑ Value Provide Feedback Request Answer Units ?