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By Emily Riehl

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It that speed, on min Suppose you serve a tennis ball that travels at a speed of 34 m/s (76 mi/h) and hits the service line of your opponent's court 19 m away. How long after you hit the ball does it touch the court? 56 6. the force during the peck? ) respectively. 8 m/s 2 18. 9 What speed could same in 10 s at the Answer: 100 in. How Answer: 12 11. Problem 8 reach acceleration? it Problem 9 19. it is is (35 Problem 9 in the club exert km/h) Problem m Wonder Woman jumps from tenth-story window, 30 from the time she is on m the high.

Law of gravitation, pulling m-\ out in front and grouping relationship Let's recast the the other quantities together: 1/V = 200N = 1/4 F = m We We can H] now {/0 — evaluate the quantity in brackets, taking the earth and d as the distance its radius. The of d. we quantity [G point, not just at distances of one, two, three, four, and five times the radius of the earth. We is the astronaut's weight on earth— 800 N. 8 m/s just we do when using , the value W= same m 2 /d 2 gives the acceleration due to gravity at any on the ] surface A results as of the earth, why g is if you use mg.

As it gets closer to the black hole the slowdown is greater, so much so that, if noon were the time you calculated that the robot would reach the Schwartzschild radius, then you would see its watch approach noon but never reach it, just as you would notice the robot approach the redshift on the light. Schwartzschild radius but never get there. different; as it falls toward the black hole it boundary of the black hole as observed by the the sky and shrinks into a smaller and smaller circle For the robot, things are notices the horizon (the robot) rises up into overhead until schild radius it finally vanishes (when its when the robot reaches the Schwartz- clock reads noontime).

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A survey of categorical concepts by Emily Riehl


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