4th Edition

ISBN: 9780135245033

Author: Knight

Publisher: PEARSON

Concept explainers

In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.

Linear Displacement

The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, fo…

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Textbook Question

Chapter 1, Problem 38EAP

For Problems 34 through 43, draw a complete pictorial representation.Do not solve these problems or do any mathematics.

34. A Porsche accelerates from a stoplight at 5.0 m/s² for five seconds, then coasts for three more seconds. How far has it traveled?

35. A jet plane is cruising at 300 m/s when suddenly the pilot turns the engines up to full throttle. After traveling 4.0 km, the jet is moving with a speed of 400 m/s. What is the jet’s acceleration as it speeds up?

36. Sam is recklessly driving 60 mph in a 30 mph speed zone when he suddenly sees the police. He steps on the brakes and slows to 30 mph in three seconds, looking nonchalant as he passes the officer. How far does he travel while braking?

37. You would like to stick a wet spit wad on the ceiling, so you toss it straight up with a speed of 10 m/s. How long does it take to reach the ceiling, 3.0 m above?

38. A speed skater moving across frictionless ice at 8.0 m/s hits a 5.0-m-wide patch of rough ice. She slows steadily, then continues on at 6.0 m/s. What is her acceleration on the rough ice?

39. Santa loses his footing and slides down a frictionless, snowy roof that is tilted at an angle of 30º. If Santa slides 10 m before reaching the edge, what is his speed as he leaves the roof?

40. A motorist is traveling at 20 m/s. He is 60 m from a stoplight when he sees it turn yellow. His reaction time, before stepping on the brake, is 0.50 s. What steady deceleration while braking will bring him to a stop right at the light?

41. A car traveling at 30 m/s runs out of gas while traveling up a 10º slope. How far up the hill will the car coast before starting to roll back down?

42. Ice hockey star Bruce Blades is 5.0 m from the blue line and gliding toward it at a speed of 4.0 m/s. You are 20 m from the blue line, directly behind Bruce. You want to pass the puck to Bruce. With what speed should you shoot the puck down the ice so that it reaches Bruce exactly as he crosses the blue line?

43. David is driving a steady 30 m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.0 m/s² at the instant when David passes. How far does Tina drive before passing David?

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Chapter 1, Problem 37EAP

Chapter 1, Problem 39EAP

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Chapter 1 Solutions

MASTERPHYS:KNIGHT'S PHYSICS ACCESS+WKB

Ch. 1 - How many significant figures does each of the...Ch. 1 - How many significant figures does each of the...Ch. 1 - Is the particle in FIGURE Q1.3 speeding up?...Ch. 1 - Does the object represented in FIGURE Q1.4 have a...Ch. 1 - Does the object represented in FIGURE Q1.5 have a...Ch. 1 - Determine the signs (positive, negative, or zero)...Ch. 1 - Determine the signs (positive, negative, or zero)...Ch. 1 - Determine the signs (positive, negative, or zero)...Ch. 1 - A car skids to a halt to avoid hitting an object...Ch. 1 - Prob. 2EAP

Ch. 1 - You are watching a jet ski race. A racer speeds up...Ch. 1 - a. Write a paragraph describing the particle...Ch. 1 - You drop a soccer ball from your third-story...Ch. 1 - A baseball player starts running to the left to...Ch. 1 - A softball player slides into second base. Use the...Ch. 1 - a. FIGURE EX1.8 shows the first three points of a...Ch. 1 - FIGURE EX1.9 shows five points of a motion...Ch. 1 - FIGURE EX1.10 shows two dots of a motion diagram...Ch. 1 - FIGURE EX1.11 shows two dots of a motion diagram...Ch. 1 - A speed skater accelerates from rest and then...Ch. 1 - A car travels to the left at a steady speed for a...Ch. 1 - A goose flies toward a pond. It lands on the water...Ch. 1 - You use a long rubber band to launch a paper wad...Ch. 1 - A roof tile falls straight down from a two-story...Ch. 1 - Your roommate drops a tennis ball from a...Ch. 1 - 18. FIGURE EX1.18 shows the motion diagram of a...Ch. 1 - Prob. 19EAP Ch. 1 - Prob. 20EAP Ch. 1 - Draw a pictorial representation for the following...Ch. 1 - Draw a pictorial representation for the following...Ch. 1 - How many significant figures are there in the...Ch. 1 - Convert the following to SI units: a. 8.0 in b. 66...Ch. 1 - Convert the following to SI units: a. 75 in b....Ch. 1 - Using the approximate conversion factors in Table...Ch. 1 - Using the approximate conversion factors in Table...Ch. 1 - Prob. 28EAP Ch. 1 - Prob. 29EAP Ch. 1 - Prob. 30EAP Ch. 1 - Estimate the height of a telephone pole. Give your...Ch. 1 - Estimate the average speed with which the hair on...Ch. 1 - Motor neurons in mammals transmit signals from the...Ch. 1 - For Problems 34 through 43, draw a complete...Ch. 1 - For Problems 34 through 43, draw a complete...Ch. 1 - For Problems 34 through 43, draw a complete...Ch. 1 - For Problems 34 through 43, draw a complete...Ch. 1 - For Problems 34 through 43, draw a complete...Ch. 1 - For Problems 34 through 43, draw a complete...Ch. 1 - For Problems 34 through 43, draw a complete...Ch. 1 - For Problems 34 through 43, draw a complete...Ch. 1 - For Problems 34 through 43, draw a complete...Ch. 1 - For Problems 34 through 43, draw a complete...Ch. 1 - Problems 44 through 48 show a motion diagram. For...Ch. 1 - Problems 44 through 48 show a motion diagram. For...Ch. 1 - Problems 44 through 48 show a motion diagram. For...Ch. 1 - Problems 44 through 48 show a motion diagram. For...Ch. 1 - Problems 44 through 48 show a motion diagram. For...Ch. 1 - Problems 49 through 52 show a partial motion...Ch. 1 - Problems 49 through 52 show a partial motion...Ch. 1 - Problems 49 through 52 show a partial motion...Ch. 1 - Problems 49 through 52 show a partial motion...Ch. 1 - Prob. 53EAP Ch. 1 - As an architect, you are designing a new house. A...Ch. 1 - 55. A 5.4-cm-diameter cylinder has a length of...Ch. 1 - An intravenous saline drip has 9.0 g of sodium...Ch. 1 - Prob. 57EAP Ch. 1 - FIGURE P1.58 shows a motion diagram of a car...Ch. 1 - Write a short description of a real object for...Ch. 1 - Write a short description of a real object for...

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