zickey Henderson, baseball's record holder for stolen bases, approaches third base. He lives head first, hitting the ground at 6.89 m/s and reaching the base at 5.92 m/s, accelerating at -5.28 m/s/s. Determine the distance Rickey slides across the ground pefore touching the base.
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- Recall the famous experiment of Galileo Galilei on top of the leaning tower of Pisa? If he accidentally dropped one stone 1.0 s ahead of the other, with what initial velocity (in m/s) must the second stone would have to be thrown if the two stones would hit the ground at the same time? Note: The tower is 54 m high.. A hot-air balloon is drifting straight downward with a constant speed of 2.40 m/s. When the balloon is7.63 m above the ground, the balloonist decides to drop one of the ballast sandbags to the ground below.How much time elapses before the sandbag hits the ground?a rocket initially at rest, is fired vertically with an upward acceleration of 10ms/s. at an altitude of 0.5km, the engine of the rocket cuts off. what is the maximum altitude reached by the rocket ?
- The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with an acceleration of 5.60 m/s2 for 4.20 s, making straight skid marks 62.4 m long, all the way to the tree. With what speed does the car then strike the tree?A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 12 m/s, skates by with the puck. After 3.0s, the first player makes up his mind to chase his opponent. If he accelerates uniformly at 4.0 m/s, how long does it take him to catch his opponent?A baseball is pitched, reaching the batter with a speed of 37 m/s, and is hit such that it returns on the same line at 48 m/s. If the ball was in contact with the bat for .22 seconds, what was the magnitude of the average acceleration experienced by the ball during the time of contact?
- In getting ready to slam-dunk the ball, a basketball player starts from rest and sprints to a speed of 7.12 m/s in 3.94 s. Assuming that the player accelerates uniformly, determine the distance he runs.Rickey Henderson, baseball's record holder for stolen bases, approaches third base. He dives head first, hitting the ground at 6.69 m/s and reaching the base at 5.92 m/s, accelerating at -5.18 m/s/s. Determine the distance Rickey slides across the ground before touching the base.A typical jetliner lands at a speed of 160 mi/h and decelerates at the rate of (10.0 mi/h)/s. If the plane travels at a constant speed of 160 mi/h for 1.00 s after landing before applying the brakes, what is the total displacement of the aircraft between touchdown on the runway and coming to rest?
- If a ball is thrown straight up into the air with an initial velocity of 70 ft/s, it height in feet after ? second is given by y=70t−16t^2. Find the average velocity for the time period begining when t=2 and lasting 0.1 seconds = 0.01 seconds= 0.001 seconds= Finally based on the above results, guess what the instantaneous velocity of the ball is when ?=2.A peregrine falcon can fly at a velocity of 83.3 m/s in still air. If it takes the peregrine 17 min to travel 9.00 km straight into an oncoming wind, what is the velocity of the wind? If the peregrine flies along with the wind, how long will it take for it to travel 9.00 km?An inquisitive physics student and mountain climber climbs a 51.0-m-high cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. The first stone has an initial speed of 2.06 m/s. (b) What initial velocity must the second stone have if the two stones are to hit the water simultaneously?