Question

Constants A bat strikes a 0.145 kg baseball. Just before impact, the ball is traveling horizontally to the right at 50.0 m/s, when it leaves the bat, the ball is traveling to the left at an angle of 30° above horizontal with a speed of 38.0 m/s. The ball and bat are in contact for 1.75 ms. Part A Find the x- and y-components of the average force on the ball. Suppose that the +3 axis is directed to the right, and the +y axis is directed upward. Express your answers in newtons using three significant figures separated by a comma. VO AQ R o 2 ? F2, F, = Submit Request Answer Request Answer Provide Feedback Next >

Answer 1

m, = 0.145kg 2 = 50m/s V₂ = 38 m/s 0 = 30° At = 1.75 ms = 1.75 x io's We take the right as + x-direction and upward as ty direction, Using unit vectors ū = 50 î T2 = -38Cors 36 † + 38 Sin 30° ſ = -32.91 Î + 19 h Momentum is given by Ř = ona p = mai = 0.145 (501) = 7.25 ? P = my, = 0.145 (-32.91 î + 195) -4.71 Î +2.755 ġ According to Newton's second Law. Σ - Α. Eř= Pe - R (-4.77 +2:7559) - 7.25 Î 1.75 x 103 =-6868.5 Î + 1574.28 ſ Fx = 6868.5 ( to the left) csscanned with CamScannery = 1574.28 ( the upward)