Holt Physics: Student Edition 2009 1st Edition solutions

Holt Physics: Student Edition 2009 1
Identify a convenient coordinate system for analyzing each of the following situations: a. a dog walking along a sidewalk b. an acrobat walking along a high wire c. a submarine submerging at an angle of 30 to the horizontal

Holt Physics: Student Edition 2009 1
Interpreting Graphics Figure 8 shows position-time graphs of the straight-line movement of two brown bears in a wildlife preserve. Which bear has the greater average velocity over the entire period? Which bear has the greater velocity at t = 8.0 min? Is the velocity of bear A always positive? Is the

Holt Physics: Student Edition 2009 1
Determine the units of the quantity described by each of the following combinations of units: a. \(kg (m/s) (1/s)\) b. \((kg/s) (m/s^2)\) c. \((kg/s) (m/s)^2\) d. \((kg/s) (m/s)\)

Holt Physics: Student Edition 2009 1
Critical Thinking A gymnast practices two dismounts from the high bar on the uneven parallel bars. During one dismount, she swings up off the bar with an initial upward velocity of + 4.0 m/s. In the second, she releases from the same height but with an initial downward velocity of 3.0 m/s.What is her

Holt Physics: Student Edition 2009 1
The photographs below show unit conversions on the labels of some grocery-store items. Check the accuracy of these conversions.Are the manufacturers using significant figures correctly? (1) \(0.9oz=26g\) (2) \(25sqft=8\frac{1}{3}yd\times 12in=2.32m^2\) (3) \(5lb=80Oz=2.26kg\) (4) \(16Oz=473.12ml\)

Holt Physics: Student Edition 2009 1
Interpreting Graphics Figure 17 is a position-time graph of the motion of a basketball thrown straight up. Use the graph to sketch the path of the basketball and to sketch a velocity-time graph of the basketballs motion. a. Is the velocity of the basketball constant? b. Is the acceleration of the bas

Holt Physics: Student Edition 2009 1
Interpreting Graphics Which graph best matches the data? Volume of air (m3) Mass of air (kg) 0.50 0.644 1.50 1.936 2.25 2.899 4.00 5.159 5.50 7.096

Holt Physics: Student Edition 2009 1
While flying over the Grand Canyon, the pilot slows the plane down to one-half the velocity in item 3. If the winds velocity is still 75 km/h toward the southeast, what will the planes new resultant velocity be? Use graphical techniques.

Holt Physics: Student Edition 2009 1
A coin is tossed vertically upward. a. What happens to its velocity while it is in the air? b. Does its acceleration increase, decrease, or remain constant while it is in the air?

Holt Physics: Student Edition 2009 1
Find the magnitude and direction of the resultant velocity vector for the following perpendicular velocities: a. a fish swimming at 3.0 m/s relative to the water across a river that moves at 5.0 m/s b. a surfer traveling at 1.0 m/s relative to the water across a wave that is traveling at 6.0 m/s

Holt Physics: Student Edition 2009 1
Two students walk in the same direction along a straight path, at a constant speedone at 0.90 m/s and the other at 1.90 m/s. a. Assuming that they start at the same point and the same time, how much sooner does the faster student arrive at a destination 780 m away? b. How far would the students have

Holt Physics: Student Edition 2009 1
Carry out the following arithmetic operations: a. find the sum of the measurements 756 g, 37.2 g, 0.83 g, and 2.5 g b. find the quotient of 3.2 m/3.563 s c. find the product of 5.67 mm p d. find the difference of 27.54 s and 3.8 s 2

Holt Physics: Student Edition 2009 1
A ball is thrown directly upward into the air. The graph below shows the vertical position of the ball with respect to time. a. How much time does the ball take to reach its maximum height? b. How much time does the ball take to reach one-half its maximum height? c. Estimate the slope of y/t at t = 0

Holt Physics: Student Edition 2009 1
One swimmer in a relay race has a 0.50 s lead and is swimming at a constant speed of 4.00 m/s. The swimmer has 20.0 m to swim before reaching the end of the pool. A second swimmer moves in the same direction as the leader. What constant speed must the second swimmer have in order to catch up to the l

Holt Physics: Student Edition 2009 1
A bouquet is thrown upward. a. Will the value for the bouquets displacement be the same no matter where you place the origin of the coordinate system? b. Will the value for the bouquets velocity be the same? c. Will the value for the bouquets acceleration be the same? 3

Holt Physics: Student Edition 2009 1
Interpreting Graphics The velocity-versus-time graph for a shuttle bus moving along a straight path is shown in Figure 13. a. Identify the time intervals during which the velocity of the shuttle bus is constant. b. Identify the time intervals during which the acceleration of the shuttle bus is consta

Holt Physics: Student Edition 2009 1
Indicate which of the following physics symbols denote units and which denote variables or quantities. a. C b. c c. C d. t e. T f. T

Holt Physics: Student Edition 2009 1
A bus slows down uniformly from 75.0 km/h (21 m/s) to 0 km/h in 21 s. How far does it travel before stopping? 1

Holt Physics: Student Edition 2009 1
Express the following measurements as indicated. a. 6.20 mg in kilograms b. 3 109 s in milliseconds c. 88.0 km in meters

Holt Physics: Student Edition 2009 1
Two students are on a balcony 19.6 m above the street. One student throws a ball vertically downward at 14.7 m/s. At the same instant, the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way down. a. What is the difference in the time th