College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Chapter 2, Problem 55P
ǁ BIO Physiological effects of large acceleration. The rocket-driven sled Sonic Wind No. 2, used for investigating the physiological effects of large accelerations, runs on a straight, level track that is 1080 m long. Starting from rest, it can reach a speed of 1610 km/h in 1.80 s. (a) Compute the acceleration in m/s2 and in g’s. (b) What is the distance covered in 1.80 s? (c) A magazine article states that, at the end of a certain run, the speed of the sled decreased from 1020 km/h to zero in 1.40 sand that, during this time, its passenger was subjected to more than 40g. Are these figures consistent?
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e rocket-driven sled Sonic Wind No. 2, used for investigating the physiological effects of large accelerations, runs on a straight, level track 1070 m (3500 ft) long. Starting from rest, it can reach a speed of 224 m/s(500 mi/h) in 0.900 s. (a) Compute the acceleration in m/s, assuming that it is constant. (b) What is the ratio of this acceleration to that of a freely falling body (8)? (c) What distance is covered in 0.900 s? (d) A magazine article states that at the end of a certain run, the speed of the sled de- creased from 283 m/s (632 mi/h) to zero in 1.40 s and that during this time the magnitude of the acceleration was greater than 40g. Are these figures consistent?
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by 6 mi/h to drive the 132 mi from Barrington to Collins. If the second leg of his trip took 2 min more time than the first leg,
Cheetahs can accelerate to a speed of 20.2 m/s in 2.65 s and can continue to accelerate to reach a top speed of 29.0 m/s . Assume the acceleration is constant until the top speed is reached and is zero thereafter. Let the +? direction point in the direction the cheetah runs.Express the cheetah's top speed ?top in miles per hour (mi/h) .Starting from a crouched position, how much time ?accel does it take a cheetah to reach its top speed and what distance ? does it travel in that time?
Chapter 2 Solutions
College Physics (10th Edition)
Ch. 2 - A jogger runs due east along a straight jogging...Ch. 2 - Give an example or two in which the magnitude of...Ch. 2 - Under what conditions is average velocity equal to...Ch. 2 - If an automobile is traveling north, can it have...Ch. 2 - True or false? (a) If an objects average speed is...Ch. 2 - Is it possible for an object to be accelerating...Ch. 2 - A wind-up toy car is released from rest. It...Ch. 2 - Can an object with constant acceleration reverse...Ch. 2 - If the graph of the position of an object as a...Ch. 2 - If the graph of the position of an object as a...
Ch. 2 - If the graph of the velocity of an object as a...Ch. 2 - Figure 2.31 shows graphs of the positions of three...Ch. 2 - Figure 2.32 shows graphs of the velocities of...Ch. 2 - Figure 2.33 shows the graph of an objects position...Ch. 2 - Figure 2.3 shows the graph of an objects velocity...Ch. 2 - Figure 2.35 shows the position x of an object as a...Ch. 2 - Figure 2.36 shows the velocity of an object Ux as...Ch. 2 - A ball is dropped from rest from the top of a...Ch. 2 - Which of the following statements about average...Ch. 2 - A ball is thrown directly upward with a velocity...Ch. 2 - Two objects start at the same place at the same...Ch. 2 - An object starts from rest and accelerates...Ch. 2 - If a car moving at 80 mi/h takes 400 ft to stop...Ch. 2 - Figure 2.38 shows the velocity of a jogger as a...Ch. 2 - A certain airport runway of length L allows planes...Ch. 2 - A ball rolls off a horizontal shelf a height h...Ch. 2 - A frog leaps vertically into the air and...Ch. 2 - A cat runs in a straight line. Figure 2.39 shows a...Ch. 2 - A wildebeest is running in a straight line, which...Ch. 2 - A bullet is dropped into a river from a very high...Ch. 2 - An ant is crawling along a straight wire, which we...Ch. 2 - || A person is walking briskly in a straight line,...Ch. 2 - A dog runs from points A to B to C in 3.0 s. (See...Ch. 2 - || BIO Figure 2.44 shows the position of a moving...Ch. 2 - || An object moves along the x axis. Figure 2.45...Ch. 2 - || A boulder starting from rest rolls down a hill...Ch. 2 - || Each graph in Figure 2.47 shows the position of...Ch. 2 - Family trip. You and your family take a trip to...Ch. 2 - Hypersonic scramjet. On March 27, 2004, the United...Ch. 2 - Plate tectonics. The earths crust is broken up...Ch. 2 - A runner covers one lap of a circular track 40.0 m...Ch. 2 - At room temperature, sound travels at a speed of...Ch. 2 - BIO Ouch! Nerve impulses travel at different...Ch. 2 - While riding on a bus traveling down the highway,...Ch. 2 - || A mouse travels along a straight line; its...Ch. 2 - || The freeway blues! When you normally drive the...Ch. 2 - ||Two runners start simultaneously at opposite...Ch. 2 - || A physics professor leaves her house and walks...Ch. 2 - || A test car travels in a straight line along the...Ch. 2 - || Figure 2.50 shows the position x of a crawling...Ch. 2 - || The graph in Figure 2.51 shows the velocity of...Ch. 2 - || DATA A test driver at Incredible Motors, Inc.,...Ch. 2 - (a) The pilot of a jet fighter will black out at...Ch. 2 - || For each graph of velocity as a function of...Ch. 2 - || A little cat, Bella, walks along a straight...Ch. 2 - The driver of a car traveling on the highway...Ch. 2 - BIO Animal motion. Cheetahs, the fastest of the...Ch. 2 - || BIO A cat drops from a shelf 4.0 ft above the...Ch. 2 - || BIO Blackout? A jet fighter pilot wishes to...Ch. 2 - A car is traveling at 60 mi/h down a highway. (a)...Ch. 2 - BIO If a pilot accelerates at more than 4g, he...Ch. 2 - || BIO Air-bag injuries. During an auto accident,...Ch. 2 - Starting from rest, a boulder rolls down a hill...Ch. 2 - Faster than a speeding bullet! The Beretta Model...Ch. 2 - Electric drag racer. An electric drag racer is...Ch. 2 - The reaction time of the average automobile driver...Ch. 2 - According to recent typical test data, a Ford...Ch. 2 - A car sitting at a red light begins to accelerate...Ch. 2 - If the radius of a circle of area A and...Ch. 2 - In the redesign of a machine, a metal cubical part...Ch. 2 - You have two cylindrical tanks. The tank with the...Ch. 2 - Prob. 42PCh. 2 - Two rockets having the same acceleration start...Ch. 2 - The drivers of two cars having equal speeds hit...Ch. 2 - Two bicyclists start a sprint from rest, each...Ch. 2 - (a) If a flea can jump straight up to a height of...Ch. 2 - A brick is released with no initial speed from the...Ch. 2 - Worlds tallest building. Suppose that you drop a...Ch. 2 - A tennis ball on Mars, where the acceleration due...Ch. 2 - Measuring g. One way to measure g on another...Ch. 2 - Thats a lot of hot air! A hot-air balloonist,...Ch. 2 - Astronauts on the moon. Astronauts on our moon...Ch. 2 - A student throws a water balloon vertically...Ch. 2 - A rock is thrown vertically upward with a speed of...Ch. 2 - BIO Physiological effects of large acceleration....Ch. 2 - Two stones are thrown vertically upward from the...Ch. 2 - Two coconuts fall freely from rest at the same...Ch. 2 - A Toyota Prius driving north at 65 mi/h and a VW...Ch. 2 - You are driving eastbound on the interstate at 70...Ch. 2 - A helicopter 8.50 m above the ground and...Ch. 2 - || A jetliner has a cruising air speed of 600 mi/h...Ch. 2 - || At the instant the traffic light turns green,...Ch. 2 - || A state trooper is traveling down the...Ch. 2 - Two rocks are thrown directly upward with the same...Ch. 2 - BIO Prevention of hip fractures. Falls resulting...Ch. 2 - || Egg drop. You are on the roof of the physics...Ch. 2 - || Galileos marbles. Galileo used marbles rolling...Ch. 2 - A large boulder is ejected vertically upward from...Ch. 2 - A car is traveling in the negative x direction at...Ch. 2 - Bio A healthy heart pumping at a rate of 72 beats...Ch. 2 - A car in the northbound lane s sitting at a red...Ch. 2 - A rocket blasts off vertically from rest on the...Ch. 2 - BIO An elite human sorinter reaches his top speed...Ch. 2 - || How high is the cliff? Suppose you are climbing...Ch. 2 - BIO Blood flow in the heart. The human circulatory...Ch. 2 - BIO Blood flow in the heart. The human circulatory...Ch. 2 - BIO Blood flow in the heart. The human circulatory...
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