College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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What is your new speed, while holding the flour stack? Suppose you now try to rid yourself of the extra weight by throwing the flour sack straight up. What will be your speed while the sack is in the air? (Same/increase/decrease)
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- You throw a ball on planet X where g is not the same as on Earth. The figure below shows the vertical velocity of the ball after it leaves your hand. Air resistance is not important. v(m/s) 18.0 12.0 6.0 -6.0 -12.0 -18.0 1.0 2.0 3.0 t(s)arrow_forwardThe Zero Gravity Research Facility (for more information you can check out their homepage at the URLhttp://zeta.lerc.nasa.gov/facility/zero.htm). At the Zero Gravity Research Facility at NASA Lewis Research Center the main facility is a tower which allows to drop something from a height of 145m. a) How long can an object be in free fall if it starts falling from the top? b) What is its speed just as it reaches the catching device at the bottom? c) When caught, the object experiences an average deceleration of 25g as its speed is reduced to zero.arrow_forwardA jogger runs along the dike with a speed of 4.2 m/s in a direction 30 degrees above the x-axis. What is the y component of the jogger's velocity? Give your answer to one decimal place.arrow_forward
- At a pool, a 3.26 kg life ring is thrown by a lifeguard to a struggling swimmer. The lifeguard stand is 1.75 m above the water. If air resistance is negligible and the life ring is launch with a speed of 8.23 m/s at the angle indicated in the figure: a) Find the height of the life ring and the net force on the life ring at point P. b) Find how far the life ring lands from the base of the stand. c) With what velocity did the life ring strike the water at point Q? 30°arrow_forward. a. Consider two parachutists, a heavy person and a light person, who jump from the same altitude with parachutes of the same size. Which person reaches terminal speed first? Which person has the greater terminal speed? Which person reach the ground first? If there were no air resistance, as on the moon, how would your answers to these questions differ?arrow_forwardYou want the final speed at the bottom of your roller coaster hill to be 25 m/s. What is the height (h) of the hill to achieve this? Use g = 9.8 m/s2arrow_forward
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