8.9. A quarterback throws a pass initially at a height of h= 1.8m above the ground. A wide receiver starting from rest at the location of the quarterback accelerates downfield with a = 4.0 m/s² and catches it t = 3.0s later. Assuming the receiver caught it at ground level, compute the speed and launch angle of the ball as it left the quarterback's hands.
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- A projectile is fired with an initial speed of 36.8 m/sm/s at an angle of 42.8 ∘∘ above the horizontal on a long flat firing range. Determine the maximum height reached by the projectile. Determine the total time in the air. Determine the total horizontal distance covered (that is, the range). Determine the speed of the projectile 1.00 s after firing. Determine the direction of the motion of the projectile 1.00 s after firing.A quarterback passes the football downfield at 19.0 m/s. It leaves his hand 1.70 m above the ground and is caught by a receiver 36.0 m away at the same height. What is the maximum height of the ball on its way to the receiver? so y0 = 1.7m x(t) = 36m , i guess i will need angle and t to get the answer, but i have no idea how to find them1. A projectile is fired from the edge of a building 11.0 m tall. The projectile just clears a 20.0 m high wall some distance away with a velocity given by 0 = (13.07 – 7.507) m/s. (a) Find the angle above the horizontal at which the projective is fired. (b) Determine the horizontal distance between the building and the wall. (c) How much time elapses between the instant the projectile is fired and the time it hits the ground beyond the wall.
- A baseball is thrown from an outfielder to the second baseman on a level field. The ball is in the air for a time At = 3.50 s and travels a horizontal distance of 92.0 m %3D before being caught at the same height it was thrown from. Ignore air resistance. a) What are the x- and y-components of the ball's initial velocity? b) What is the maximum height of the ball? c) When is the ball traveling at an angle of 0 = -26.0°?For a forensics experiment, a student decides to measure the muzzle velocity of the pellets from his BB gun. She points the gun horizontally. On a vertical wall a distance 47.3 m away from the gun, a target is placed. The shots hit the target a vertical distance 0.10 m below the gun's barrel. What is the initial speed of the pellets? Your Answer: units AnswerStudents launch a steel ball horizontally from a tabletop. The initial horizontal speed of the ball is v, the tabletop height above the floor is H.The objective is to get steel ball into the coffee can of height h. Calculate the distance D at which the students need to place the can to make a "bulls-eye". v = 6 m/sH = 7 mh = 0.17 m Use g = 10 m/s2, enter two digits after decimal.
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- The drawing shows an exaggerated view of a rifle that has been 'sighted in' for a 91.4-meter target. If the muzzle speed of the bullet is Vo = 309 m/s, there are the two possible angles 0₁ and 02 between the rifle barrel and the horizontal such that the bullet will hit the target. One of these angles is so large that it is never used in target shooting. Give your answers as (a) the smaller angle and (b) the larger angle. (Hint: The following trigonometric identity may be useful: 2 sine cose = sin 20.) (a) Number (b) Number Units Units 91.4 m OI am again standing on the sky scraper building of height 45.0 m. I throw a metal ball from the top of the building at an angle of 30.00 above the horizontal surface. The ball lands 75 cm from the base of the building. (a) What is the time taken by the ball to reach the ground? (b) How high from the ground the ball can reach?I don’t know what to do next. Please help