After starting from the position marked with the “x”, a football receiver B runs the slant-in pattern shown, making a cut at P and thereafter running with a constant speed vB = 6.4 yd/sec in the direction shown. The quarterback releases the ball with a horizontal velocity of 99 ft/sec at the instant the receiver passes point P. Determine the angle at α which the quarterback must throw the ball, and the velocity of the ball relative to the receiver when the ball is caught. Neglect any vertical motion of the ball.
After starting from the position marked with the “x”, a football receiver B runs the slant-in pattern shown, making a cut at P and thereafter running with a constant speed vB = 6.4 yd/sec in the direction shown. The quarterback releases the ball with a horizontal velocity of 99 ft/sec at the instant the receiver passes point P. Determine the angle at α which the quarterback must throw the ball, and the velocity of the ball relative to the receiver when the ball is caught. Neglect any vertical motion of the ball.
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After starting from the position marked with the “x”, a football receiver B runs the slant-in pattern shown, making a cut at P and thereafter running with a constant speed vB = 6.4 yd/sec in the direction shown. The quarterback releases the ball with a horizontal velocity of 99 ft/sec at the instant the receiver passes point P. Determine the angle at α which the quarterback must throw the ball, and the velocity of the ball relative to the receiver when the ball is caught. Neglect any vertical motion of the ball.
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