7.7 Problem 7: A cue ball of mass mj = 0.305 kg is shot at another billiard ball, with mass m, = 0.57 kg, which is at rest. The cue ballhas an initial speed of v = 7.5 m/s in the positive direction. Assume that the collision is elastic and exactly head-on.Part (a) Write an expression for the horizontal component of the billiard ball's velocity, v2f, after the collision, in terms of the other variables of theproblem.Expression :V2f =.Select from the variables below to write your expression. Note that all variables may not be required.a, B, 0, a, d, g, h,j, k, m, m1, m2, P, t, vPart (b) What is this velocity, in meters per second?Numeric : A numeric value is expected and not an expression.V2f =Part (c) Write an expression for the horizontal component of the cue ball's velocity, vif, after the collision.Expression :Vif =.Select from the variables below to write your expression. Note that all variables may not be required.a, B, 0, a, d, g, h, j, k, m, m1, m2, P, t, vPart (d) What is the horizontal component of the cue ball's final velocity, in meters per second?Numeric : A numeric value is expected and not an expression.Vif =

We need to calculate the final velocities of both the billiard ball and the cue ball.

Part (a) Write an expression for the horizontal component of the billiard ball's velocity, v2f, after the collision, in terms of the other variables of the problem. Expression : V2r = Select from the variables below to write your expression. Note that all variables may not be required. a, ß, 0, a, d, g, h, j, k, m, m1, m2, P, t, v Part (b) What is this velocity, in meters per second? Numeric : A numeric value is expected and not an expression. V2f = Part (c) Write an expression for the horizontal component of the cue ball's velocity, vif, after the collision. Expression : Vif = Select from the variables below to write your expression. Note that all variables may not be required. a, B, 0, a, d, g, h, j, k, m, m1, m2, P, t, v Part (d) What is the horizontal component of the cue ball's final velocity, in meters per second? Dumonio . A nu morie volue ie ox nooted ond net on roonior