Question

A hockey puck has a velocity of v = vxi + vyj. Another puck with identical mass is at rest at the origin. The two pucks collide. After the collision it is observed that the second puck has a velocity of vf = v2yj. Randomized Variables vx = 4.3 m/s vy = 2.1 m/s v2y = 1.8 m/s Part (a) Write an expression for the first puck's velocity after the collision, in terms of the variables in the problem statement and the unit vectors i and j. Expression : v1f = __________________________________________ Select from the variables below to write your expression. Note that all variables may not be required. α, β, θ, d, g, h, i, j, k, m, P, t, v2y, vx, vy Part (b) What is the magnitude of the first puck's velocity, in meters per second, after the collision? Numeric : A numeric value is expected and not an expression. v1f = __________________________________________ Part (c) At what angle θ does this velocity make with respect to the x-axis, in degrees? Numeric : A numeric value is expected and not an expression.

Answer 1