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import numpy as np # Input values v1x = float(input("vx_one:\n")) v1y = float(input("vy_one:\n")) v2x = float(input("vx_two:\n")) v2y = float(input("vy_two:\n")) a = float(input("alpha: ")) qn = int(input("q#:\n")) if qn == 1: u1x = v2x u1y = v1y u2x = v1x u2y = v2y elif qn == 2: a_rad = np.deg2rad(a) R = np.array([[np.cos(a_rad), -np.sin(a_rad)], [np.sin(a_rad), np.cos(a_rad)]]) R_inverse = np.array([[np.cos(a_rad), np.sin(a_rad)], [-np.sin(a_rad), np.cos(a_rad)]]) new_v1 = R_inverse.dot([v1x, v1y]) new_v2 = R_inverse.dot([v2x, v2y]) new_u1 = np.array([new_v2[0], new_v1[1]]) new_u2 = np.array([new_v1[0], new_v2[1]]) u1x, u1y = R.dot(new_u1) u2x, u2y = R.dot(new_u2) # Output the resulting velocities print(f'{u1x:.5g}\n{u1y:.5g}\n{u2x:.5g}\n{u2y:.5g}')
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