A fire hose held near the ground shoots water at a speed of 12.5 m/s. At what angle(s) should the nozzle point in order for the water to land 6.69 m away? What is the lowest angle in radians?  What is the larger angle in radians?

A ball thrown into the air by a child follows a parabolic path.The ball is 3.84 feet off the groundwhen the child releases the ball, and reaches a maximum height of 7.84 feet when it is at ahorizontal distance of 5 feet from the child. Draw a picture representing the situation. Make sure to label what you know.   Determine the equation of the function representing the situation. Determine how far from the child the ball will be when it hits the ground.

A marksman fires a practice round from A toward a target B. If the target diameter is 160 mm and the target center is at the same altitude as the end of the rifle barrel, determine the range of "shallow" launch angles for which the round will strike the target. Neglect aerodynamic drag and assume that the round is directed along the vertical centerline of the target. (Note: The word "shallow" indicates a low-flying trajectory for the round.) A Answers: i 885 m/s 0 1420 m ºses i B

You are swinging a tennis ball attached to a 55 cm long cord, swinging the tennis ball in a circle. As you swing the tennis ball, the force of tension in the cord keeps the tennis ball in a circular path. The mass of the tennis ball is 0.25 kg, and as it swings around, speed of the tennis ball is 3.8 m/s. What is the force of tension in the cord? (the unit of force is the 'Newton' )