Two pole-vaulters just clear the bar at the same height. The first lands at a speed of 8.90 m/s, and the second lands at a of 9.00 m/s. The first vaulter clears the bar at a speed of 1.00 m/s. ignore air reisstance and friction and determine the speed at which the second vaulter clears the bar.
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- It is a sunny day, and we have decided to do lab outside instead of staying cooped up. Ceylani goes to the top of Jordan Hall, and throws a ball of mass 4.87 kg down from the top of Jordan which is 124 m tall. Her lab partner, Tray, is waiting at the bottom to collect the ball and return it, for more data trials. The ball has a speed of 3.8 m/s when Ceylani throws it straight down. What is the speed of the ball as it reaches the ground? Your Answer: units AnswerTwo objects (m, = 4.50 kg and m, = 3.30 kg) are connected by a light string passing over a light, frictionless pulley as in the figure below. The 4.50-kg object is released from rest at a point h = 4.00 m above the table. (a) Determine the speed of each object when the two pass each other. m/s (b) Determine the speed of each object at the moment the 4.50-kg object hits the table. m/s (c) How much higher does the 3.30-kg object travel after the 4.50-kg object hits the table? Need Help? Read ItA 22 g golf ball is placed at the top of a loop de loop track 45 cm above the top of a desk and released from rest. After the ball moves through the track, it rolls off of the table. If the table is 1.75 meters tall, how far does the golf ball travel before hitting the ground? (Friction and air resistance are negligable)
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