Cootball is kicked such that it reaches a maximum height of 15 m and returns to the ground. It travels a forward distance of 40 m. a) What is the initial speed of the projectile? b) What is the initial angle? 4. b) e = 56.3°)
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- 1. The distance between home plate and the pitcher's mound in baseball is 60.5 ft. In MLB, baseballs are. pitched at about 90mph. Assume the ball is thrown perfectly horizontally, at 0°. How far in feet will the ball drop during its transit to home plate? Use g = 32 ft/s². (Note: this is why pitcher's mounds are raised.) 2. A pebble is tossed into the air at an angle of 62° above the horizontal, with an initial speed of 4.8 m/s. The pebble is 1.6m above the ground when it is released by the thrower's hand. a) How long will the pebble remain airborne? b) What maximum height above the ground will the pebble achieve?4-A projectile is launched from ground level at a velocity of 28 m/s and an initial angle of 37 degrees. What is the projectile's velocity the instant before it hits the ground? Include a drawing and all steps. Use the projectile motion equations.
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- A baseball player hits a ball 1.1m above the plate at an angle of 42 degrees at a speed of 35 m/s. In order to hit a home run, the ball has to clear a 2.4 m tall wall, 120 m away from the plate. a) sketch the situation, including a coordinate system and the ball's trajectory. b)how many seconds is the ball in the air, which it reaches the wall? c) does the ball go over the wall for a home run? (find its vertical position at the appropriate time) d) what is the ball's speed and direction, as it reaches the wall?11.A blue person throws an object with an initial velocity of 25.0 m/s at an angle of 37.0°. A green person stands 15.0 meters in front of the blue person and throws an object straight up. Assume that both objects are thrown from the same initial elevation. a) If the green person throws their object with an initial speed of 20.0 m/s, at what time should they throw it such that it strikes the other object while it is traveling upward? Measure this time relative to when the blue person throws their object? b) If both people throw their objects at the same time, with what initial speed must the green person throw their object such that they collide? Answers: a) ~0.267 s b) ~15.0 m/s