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- Henrietta is going off to her physics class, jogging down the sidewalk at a speed of 3.45 m/s. Her husband Bruce suddenly realizes that she left in such a hurry that she forgot her lunch of bagels, so he runs to the window of their apartment, which is a height 36.4 m above the street level and directly above the sidewalk, to throw them to her. Bruce throws them horizontally at a time 7.00 s after Henrietta has passed below the window, and she catches them on the run. You can ignore air resistance. With what initial speed must Bruce throw the bagels so Henrietta can catch them just before they hit the ground? Where is Henrietta when she catches the bagels?Sam fields a baseball hit to him in the left field. He then throws the ball to third to force out the base runner, Mike. Sam releases the ball 1.75 m above the ground with a vertical velocity of 8.5 m/s and a horizontal velocity of 26.5 m/s. At the instant Sam releases the ball, he is 43 m from the third baseman, Charlie, and Mike is 14 m from third base and running at 8.5 m/s toward third. Assume that air resistance does not affect the flight of the ball when answering the following questions. a. How high in the air does the ball go? b. How much time does it take for the ball to reach the third baseman? c. How high is the ball when it reaches the third baseman? d How long does it take Mike to reach third base if he maintains his 8.5 m/s pace?A shinobi threw a kunai due east at a velocity of 130 m/s relative to the shinobi. The shinobi was sprinting due east at 7.23 m/s relative to ground. A samurai used his bow to shoot a directly at an interception path. The arrow is due west. The samurai was stationary when the arrow was released. The velocity of the arrow due the direction of the kuna is 124 m/s relative to the samurai. The samurai and the shinobi were 147 meters away from each other. a. What is the velocity of the kuna relative to the arrow in kph? b. What is the time it will take for the kunai and arrow to be in contact? c. What is the distance of the contact point from the samurai?
- A mortar shell has an initial velocity v0= 13 m/s, at an angle θ0=60º. At the maximum height of the trajectory the shell explodes into two equal pieces. One piece has a speed immediately after the explosion of zero then falls vertically. How far horizontally does the other fragment land from where it was fired.Henrietta is going off to her physics class, jogging down the sidewalk at a speed of 3.30 m/s. Her husband Bruce suddenly realizes that she left in such a hurry that she forgot her lunch of bagels, so he runs to the window of their apartment, which is a height 52.5 m above the street level and directly above the sidewalk, to throw them to her. Bruce throws them horizontally at a time 9.00 s after Henrietta has passed below the window, and she catches them on the run. You can ignore air resistance. I. With what initial speed must Bruce throw the bagels so Henrietta can catch them just before they hit the ground? (Express your answer in meters per second.) II. Where is Henrietta when she catches the bagels? (Express your answer in meters.)Question 10. Two objects are fired into the air, and the drawing shows the projectile motions. Projectile 1 reaches the greater height, but projectile 2 has the greater range. Which one is in the air for the greater amount of time? Ans: Projectile 1, because it travels higher than projectile 2
- Henrietta is going off to her physics class, jogging down the sidewalk at a speed of 4.10 m/s. Her husband Bruce suddenly realizes that she left in such a hurry that she forgot her lunch of bagels, so he runs to the window of their apartment, which is a height 43.4 m above the street level and directly above the sidewalk, to throw them to her. Bruce throws them horizontally at a time 5.00 s after Henrietta has passed below the window, and she catches them on the run. You can ignore air resistance Part A With what initial speed must Bruce throw the bagels so Henrietta can catch them just before they hit the ground? Express your answer using three significant figures. mis Submit Request Answer Part B Where is Henrietta when she catches the bagels? Express your answer using three significant figures. m from the house Submit Request AnswerA 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?Sam is standing on a balcony while holding two objects. She reaches over the railing and drops object A from a height of 20.0 m above the ground. 0.3 seconds later, she throws object B directly upward with a speed of 4.00 m/s. One second after she dropped object A, the velocities of the objects are measured. At that time, find: a) Object A’s velocity relative to the Earth b) Object B’s velocity relative to the Earth c) Object B’s velocity relative to Object A d) Object A’s velocity relative to Object B
- A person on a trampoline bounces straight upward with an initial speed of 4. 50 m/s. Take up as the positive y direction. What is the person's velocity when she returns to her initial height? -4. 50 m/s O-4. 50 ŷ m/s O+4. 50 m/s O+4. 50 ŷ m/sA rocket is fired at a speed of 86.0 m/s from ground level, at an angle of 31.0° above the horizontal. The rocket is fired toward an 7.92- Im high wall, which is located 16.0 m away. The rocket attains its launch speed in a negligibly short period of time, after which its engines shut down and the rocket coasts. By how much does the rocket clear the top of the wall? Number i UnitsA crossbow bolt is fired horizontally over level ground toward a target 37.4 m away. The bolt hits the target 0.24 m below the height at which it was fired.what was the initial speed of the bolt in m/s?