Problem 132A swimmer is at a point 500 m from theclosest point on straight shoreline. She needsto reach a cottage located 1800 m downshore from the closest point. If she swims at4 m/s and she walks at 6 m/s, how far fromthe cottage should she come ashore so as toarrive at the cottage in the shortest time (inmeters)?

Given : Distance between swimmer and the closest point = 500m Distance to the cottage from the…

Answered: A swimmer is at a point 500 m from the…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter3: Vectors

Section: Chapter Questions

Problem 37PQ

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2. A surveyor surveys an unknown cave. She follows a passage 180m straight west, then 210m in a direction 45° E of S, and then 280m at 30° E of N. What is the surveyor’s displacement? How far did she travel after the first 3 displacements?
I took 2.28km and converted it to 2280 meters then divided by 3200 and ended up with .71m/s but it keeps saying that its incorrect. Im not sure where I keep messing up. John walks 1.80 kmkm north, then turns right and walks 1.40 kmkm east. His speed is 1.60 m/sm/sduring the entire stroll. What is the magnitude of his displacement, from beginning to end? (2.28) If Jane starts at the same time and place as John, but walks in a straight line to the endpoint of John's stroll, at what speed should she walk if she wants to arrive at the endpoint just when John does?
Problem 1Two cars, initially 100 meteres distant apart, start moving toward each other with a speed of 1 m/s and 2 m/s along a straight road. At what rate is car 1 approaching car 2? a. 3 m/s, b. -3 m/s, c. 1 m/s, d. -1 m/s At what rate is car 2 approaching car 1? a. 3 m/s, b. -3 m/s, c. 1 m/s, d. -1 m/s At what rate are the two cars approaching each other? a. 3 m/s, b. -3 m/s, c. 1 m/s, d. -1 m/s How much time would it take for the two cars to meet? a. 333 s, b. 3.33 s, c. 33.3 s, d. 0.3 s
Person A is waiting patiently at a traffic light when person B zooms past him at 25.5m/s^2. after 1.4s, person A's car accelerates at a rate of 4.5m/s^2 . Will person A be able to catch up to person B? If so how long? If not, how close will person A get to person B?
A man starts walking north at 4f t/s from a point P. Five minutes later a woman starts walking southat 5f t/s from a point 500f t due east of P. At what rate are the people moving apart 15m after the womanstarts walking.
Hi please help, I am not sure how to solve this problem. If you are walking 400m east but then decide to turn back and walk 700m west, all within 10 minutes, what is the total distance that you covered and what is the displacement relative to where you started? Assume that east is the positive direction
Can an object have a negative acceleration and be speeding up? If so, describe a possible physical situation and a corresponding coordinate system. If not, explain why not.
Steve Young stands on the 20-yard line, poised to throw long. He throws the ball at initial velocity v0v0 equal to 15.1 m/s and releases it at an angle θθ equal to 45.0∘∘. 1) Having faked an end around, Jerry Rice comes racing past Steve at a constant velocity VJ equal to 8.00 m/s, heading straight down the fild. Assuming that Jerry catches the ball at the same height above the ground that Steve throws it, how long must Steve wait to throw, after Jerry goes past, so that the ball falls directly into Jerry's hands? (Express your answer to three significant figures.) ss 2) Jerry is coming straight past Steve at VJ equal to 8.00 m/s. But just as Jerry goes past, Steve starts to run in the same direction as Jerry with VS equal to 1.10 m/s. How long must Steve wait to release the ball so that it falls directly into Jerry's hands? (Express your answer to three significant figures.)
1. An ant on a picnic table travels 30 cm eastward, then 25 cm northward, and finally 15 cm westward. What is the magnitude of the ant's displacement relative to its original position?2. For the winter, a duck flies 10.0 m/s due south against a gust of wind with a speed of 2.5 m/s. What is the resultant velocity of the duck?
2. How long will it take the ball to reach a point 1000 cm above Maria's hand on its way down? Initial velocity is 2000cm/s.
Two cars, one going due West at the rate of 100 km/hr and the other goingNorth at the rate of 70 km/hr, are traveling toward the intersection of the tworoads. At what rate are the cars approaching each other at the instant when thefirst car is0.3 km and the second car is 0.2 km from the intersection?
From point A located at the perimeter of a circular forest of diameter 30 km we want to reachthe farthest point B of the forest. There is a straight footpath BC passing through the forest. Through the trees we can walk with speed 3 km/h, along the pathway the speed of walking is 5 km/h. Find the shortest possible time needed to reach point B?

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