A tennis player serves the ball with an initial speed of 23.6 m/s, from a height of 2.37 m above the court. If the net is at a distance of 12 m and has a height of 0.90 m, determine what is indicated in each section: a) The angle that the throw must have so that the ball can pass over the net. b) The time it takes for the ball to hit the ground, assuming the person on the other side of the net fails to return it. c) If the other person has a height of 1.70 m, and his throw is made at 2.20 m, indicate in what position he must be in order to return the ball.

For general projectile motion, which of the following best describes the horizontal component of a projectile's velocity? Assume air resistance is negligible. 1) The horizontal component of a projectile's velocity continually decreases. 2) The horizontal component of a projectile's velocity continually increases. 3) The horizontal component of a projectile's velocity remains a nonzero constant. 4) The horizontal component of a projectile's velocity initially decreases and then increases. 5) The horizontal component of a projectile's velocity is zero.

A projectile is launched from the roof of a 10 m high building. The projectile is launched with initial velocity %0 = 60 m/s and a shooting angle with respect to the horizontal 0 = 50° Find: a) The maximum height of the projectile. b) The time it takes for the projectile to reach the maximum height. c) The horizontal distance between the base of the building and the point where the projectile hits the ground. d) The time elapsed between when the projectile is fired and when it hits the ground.

a) If Billy-Joe kicks a stone with a horizontal velocity of 3.50 m/s, and it lands in the water a horizontal distance of 5.40 m from where Billy-Joe is standing, what is the height of the bridge? b) If the stone had been kicked harder, how would this affect the time it would take to fall?

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.70 m/s at an angle of 25.0° below the horizontal. It strikes the ground 5.00 s later. (a) How far horizontally from the base of the building does the ball strike the ground?m(b) Find the height from which the ball was thrown.m(c) How long does it take the ball to reach a point 10.0 m below the level of launching?s

(a) From a balcony a child fires a toy arrow down to the ground below. The arrow has initial speed 12 m/s and is aimed at an angle of 30° below the horizontal. The arrow takes 1.2 seconds to hit the ground. (i) Calculate the initial horizontal (✰) and vertical (ŷ) velocity components of the arrow. (ii) Calculate the height of the balcony. (b) A projectile is launched with an initial speed of 75 m/s at an angle of 52° above the horizontal. If it lands at the same height from which it was launched, calculate how long the projectile remains in the air.

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.60 m/s at an angle of 18.0° below the horizontal. It strikes the ground 6.00 s later. (a) How far horizontally from the base of the building does the ball strike the ground? m (b) Find the height from which the ball was thrown. m (c) How long does it take the ball to reach a point 10.0 m below the level of launching?

Goro Shigeno (Pitcher) and Joe Gibson Jr. (hitter) went head to head in the Major League Baseball (MLB) series. For the last pitch, Gibson hits the baseball with 82 ft/s at angle of 75°. When the ball is directly above Shigeno he begins to run under it. Determine the (a) the total distance that the pitcher runs and (b) the constant speed at which pitcher must run in order to make the catch at the same elevation at which the ball was hit. (Note: the distance between the pitcher and hitter is 70 ft.)

A placekicker is about to kick a field goal. The ball is 26.1 m from the goalpost. The ball is kicked with an initial velocity of 18.9 m/s at an angle 8 above the ground. Between what two angles, 0₁ and 02, will the ball clear the 3.05-m-high crossbar? Give your answers as (a) the smaller angle and (b) the larger angle. (Hint: The following trigonometric identities may be useful: sec 8=1/(cos 8) and sec²0-1+tan²0.) M

A ball thrown horizontally at 12.5 m/s from the roof of a building lands 21.0 m from the base of the building. a) How tall is the building?