A basketball player makes a 3 - point shot from 30.0 ft from the hoop. The ball (R = 0.394 ft) is in the air for 1 s, and the player imparts the typical 2 rev/s backspin to the ball. The density of air is 0.0024 slug
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- A golfer gives a ball a maximum initial speed of 51.8 m/s. What is the longest possible hole-in-one for this golfer? Neglect any distance the ball might roll on the green and assume that the tee and the green are at the same level. What is the minimum speed of the ball during this hole-in-one shot?m L 4. A box with a mass m = 0.4 kg is released from rest at the top of a curved section of a track that is one quarter of a circle with a radius R = 0.2m. When the box reaches the bottom of the curved track it slides on a horizontal section of the track. There is no friction on the curved section of the track. a. Find the velocity of the box at the bottom of the curved section of the track. b. Find the normal force on the block when it is at the bottom of the circular section of the ramp. If there is a Resistive force F on the horizontal section of the track and is given as a function of speed by F=-4v² c. Write down the differential equation for the speed of the block. 1 d. Show that the solution can be written as: v = 0.5 + 10t3. A satellite is launched from the surface of the earth at the initial speed of 8 km/s. How high will it go before it stops and starts falling back to the earth?
- 12. Two boys are at point X on one side of a river, 40 m wide and having a current of 1.0 m/s, flowing as shown. Simultaneously, they dive into the water in an attempt to reach point Y, directly opposite X. Both swim at 2.0 m/s relative to the water, but one directs himself so that his net motion corresponds to XY, while the other keeps his body perpendicular to the current and consequently lands at point Z. After landing, he runs along the shore to point Y at a speed of 6.0 m/s. Which boy arrives at Y first, and by how much time does he beat the other? 1.0 m/s-A basketball is held over head by a basketball player during a game. The ball is passed to a teammate, horizontally, at 8 m/s but misses and lands.64 s later. About how high was the player holding the ball? a Ad Vi Vf 1. Your answer: O 2.01 meters high O 3.28 meters high O 4.34 meters high 1117 AM 108/2021 WM We 立After losing control, a hot air balloon is adrift on the wind, and travels north for 4.1 km. the wind shifts and blows the balloon south for 10.8 km. After one more shift, it blows North for another 11.1 km. What is the magnitude of the resulatant displacement of the hot air balloon?