PHYSICS F/SCI.+ENGINEERS W/MOD.PHYSICS
5th Edition
ISBN: 9780321992277
Author: GIANCOLI
Publisher: PEARSON
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A woman can row a boat at 6.40 km/h in still water. (a) If she is crossing a river where the current is 3.20 km/h, in what direction must her boat be headed if she wants to reach a point directly opposite her starting point? (b) If the river is 6.40 km wide, how long will she take to cross the river? (c) Suppose that instead of crossing the river she rows 3.20 km down the river and then back to her starting point. How long will she take? (d) How long will she take to row 3.20 km up the river and then back to her starting point? (e) In what direction should she head the boat if she wants to cross in the shortest possible time, and what is that time?
(e) Two boats leave the same port at the same time. One travels at a speed 10 mi/h in the
direction S 12° W and the other travels at a speed of 20 mi/h in a direction S 72⁰ W. How far
apart are the two boats after one hour?
). A boat heads 30 west of north with a water speed of 24 m/s. Determine its
resultant velocity, relative to the ground, when it encounters ai0m/s current
from 30° north of east.
Chapter 3 Solutions
PHYSICS F/SCI.+ENGINEERS W/MOD.PHYSICS
Ch. 3.2 - Prob. 1AECh. 3.3 - What does the incorrect vector in Fig. 36c...Ch. 3.8 - Prob. 1DECh. 3.8 - The maximum range of a projectile is found to be...Ch. 3 - One car travels due east at 40 km/h. and a second...Ch. 3 - Can you conclude that a car is not accelerating if...Ch. 3 - Prob. 3QCh. 3 - Can the displacement vector for a particle moving...Ch. 3 - During baseball practice, a batter hits a very...Ch. 3 - If V=V1+V2, is V necessarily greater than V1...
Ch. 3 - Prob. 7QCh. 3 - Can two vectors, of unequal magnitude, add up to...Ch. 3 - Can the magnitude of a vector ever (a) equal, or...Ch. 3 - Can a particle with constant speed be...Ch. 3 - Prob. 11QCh. 3 - In archery, should the arrow be aimed directly at...Ch. 3 - Prob. 13QCh. 3 - Prob. 14QCh. 3 - Prob. 15QCh. 3 - A projectile is launched at an upward angle of 30...Ch. 3 - A projectile has the least speed at what point in...Ch. 3 - Two cannonballs, A and B, are fired from the...Ch. 3 - A person sitting in an enclosed train car, moving...Ch. 3 - If you are riding on a train that speeds past...Ch. 3 - Two rowers, who can row at the same speed in still...Ch. 3 - If you stand motionless under an umbrella in a...Ch. 3 - Prob. 1MCQCh. 3 - Prob. 2MCQCh. 3 - Prob. 3MCQCh. 3 - Prob. 4MCQCh. 3 - Prob. 6MCQCh. 3 - Prob. 7MCQCh. 3 - Prob. 8MCQCh. 3 - Prob. 10MCQCh. 3 - Prob. 12MCQCh. 3 - Prob. 13MCQCh. 3 - Prob. 14MCQCh. 3 - Prob. 15MCQCh. 3 - Prob. 1PCh. 3 - Prob. 3PCh. 3 - (II) Graphically determine the resultant of the...Ch. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7PCh. 3 - Prob. 8PCh. 3 - Prob. 9PCh. 3 - Prob. 10PCh. 3 - (II) (a) Given the vectors A and B shown in Fig....Ch. 3 - (II) Determine the vector AC, given the vectors A...Ch. 3 - Prob. 13PCh. 3 - Prob. 14PCh. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - Prob. 17PCh. 3 - Prob. 18PCh. 3 - Prob. 19PCh. 3 - (I) What was the average velocity of the particle...Ch. 3 - Prob. 21PCh. 3 - (II) At t = 0, a particle starts from rest at x =...Ch. 3 - Prob. 23PCh. 3 - Prob. 24PCh. 3 - Prob. 25PCh. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Prob. 30PCh. 3 - Prob. 31PCh. 3 - Prob. 32PCh. 3 - Prob. 33PCh. 3 - Prob. 34PCh. 3 - Prob. 35PCh. 3 - Prob. 36PCh. 3 - (II) A fire hose held near the ground shoots water...Ch. 3 - Prob. 38PCh. 3 - Prob. 39PCh. 3 - Prob. 40PCh. 3 - Prob. 41PCh. 3 - Prob. 42PCh. 3 - Prob. 43PCh. 3 - Prob. 44PCh. 3 - Prob. 45PCh. 3 - Prob. 46PCh. 3 - Prob. 47PCh. 3 - Prob. 48PCh. 3 - Prob. 49PCh. 3 - Prob. 50PCh. 3 - Prob. 51PCh. 3 - Prob. 52PCh. 3 - (II) (a) A long jumper leaves the ground at 45...Ch. 3 - Prob. 54PCh. 3 - Prob. 55PCh. 3 - Prob. 56PCh. 3 - Prob. 57PCh. 3 - Prob. 58PCh. 3 - (II) Suppose the kick in Example 3-7 is attempted...Ch. 3 - Prob. 60PCh. 3 - Prob. 61PCh. 3 - Prob. 62PCh. 3 - (I) Huck Finn walks at a speed of 0.70m/s across...Ch. 3 - (II) Determine the speed of the boat with respect...Ch. 3 - Prob. 65PCh. 3 - (II) A passenger on a boat moving at 1.70 m/s on a...Ch. 3 - Prob. 67PCh. 3 - (II) In what direction should the pilot aim the...Ch. 3 - Prob. 69PCh. 3 - Prob. 70PCh. 3 - (II) A swimmer is capable of swimming 0.60 m/s in...Ch. 3 - (II) A swimmer is capable of swimming 0.60m/s in...Ch. 3 - Prob. 73PCh. 3 - Prob. 74PCh. 3 - Prob. 75PCh. 3 - Prob. 76GPCh. 3 - Prob. 77GPCh. 3 - Prob. 78GPCh. 3 - Prob. 79GPCh. 3 - (II) Here is something to try at a sporting event....Ch. 3 - Prob. 82GPCh. 3 - Prob. 83GPCh. 3 - Prob. 84GPCh. 3 - Prob. 85GPCh. 3 - Prob. 86GPCh. 3 - Prob. 87GPCh. 3 - Prob. 88GPCh. 3 - Prob. 89GPCh. 3 - Prob. 90GPCh. 3 - Prob. 91GPCh. 3 - Prob. 93GPCh. 3 - Prob. 95GPCh. 3 - The speed of a boat in still water is v. The boat...Ch. 3 - At t = 0 a batter hits a baseball with an initial...Ch. 3 - Prob. 98GPCh. 3 - Prob. 99GPCh. 3 - Prob. 100GPCh. 3 - Prob. 101GPCh. 3 - Prob. 102GP
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- An airplane with a ground speed of 450 m/s, heading due south. A gentle wind blowing at 18 km/hr having an angle of 60° from the bearing. (i) Sketch the scenario with proper diagram and compute: (ii) the true air speed (iii) Find heading direction of the airplane from north.arrow_forwardA river has a steady speed of 0.400 m/s. A student swims upstream a distance of 1.00 km and swims back to the (a) If the student can swim at a speed of 1.10 m/s in still water, how long does the trip take? (b) How much time is required in still water for the same length swim? (c) Intuitively, why does the swim take longer when there is a current?arrow_forwardA jetliner has a cruising air speed of 600 mph relative to theair. How long does it take this plane to fly round-trip fromSan Francisco to Chicago, an east-west flight of 2,000 mi each way,(a) if there is no wind blowing and (b) if the wind is blowing at150 mph from the west to the east?arrow_forward
- A pilot wishes to fly directly south but there is a wind from the west at 35.0 km/h. The airspeed of her planeis 215 km/h a) What direction should she point the plane? b) If her destination is 290 km directly south of her starting point, how many hours will the flight last?arrow_forwardA rowboat crosses a river with a velocity of0.87 m/s at an angle 34◦ North of West relativeto the water. The river is 648 m wide and carries a currentof 0.57 m/s due East. When the boat reaches the opposite bank,how far East or West (downstream “+” orupstream “−”) from its starting point (on theopposite bank) does it land.Note: In your answer, take an Eastwarddisplacement to be positive and a Westwarddisplacement to be negative.Answer in units of marrow_forwardA boat can be rowed at 8.0 km/h in still water. (a) How much time is required to row 1.5 km downstream in a river moving 3.0 km/h relative to the shore? (b) How much time is required for the return trip? (c) In what direction must the boat be aimed to row straight across the river? (d) Suppose the river is 0.8 km wide. What is the velocity of the boat with respect to Earth and how much time is required to get to the opposite shore? (e) Suppose, instead, the boat is aimed straight across the river. How much time is required to get across and how far downstream is the boat when it reaches the opposite shore?arrow_forward
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