200 km/h 300 m 50° 240 km/h PROBLEM 11.141 Racecar A is traveling on a straight portion of the track while racecar B is traveling on a circular portion of the track. At the instant shown, the speed of A is increasing at the rate of 10 m/s², and the speed of B is decreasing at the rate of 6 m/s². For the position shown, determine (a) the velocity of B relative to A, (b) the acceleration of B relative to A.

200 km/h 300 m 50° 240 km/h PROBLEM 11.141 Racecar A is traveling on a straight portion of the track while racecar B is traveling on a circular portion of the track. At the instant shown, the speed of A is increasing at the rate of 10 m/s², and the speed of B is decreasing at the rate of 6 m/s². For the position shown, determine (a) the velocity of B relative to A, (b) the acceleration of B relative to A.

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And The Law Of Gravity

Section: Chapter Questions

Problem 15P: A car initially traveling eastward turns north by traveling in a circular path at uniform speed as...

See similar textbooks

Similar questions

A car initially traveling eastward turns north by traveling in a circular path at uniform speed as shown in Figure P7.15. The length of the arc ABC is 235 m, and the car completes the turn in 36.0 s. (a) Determine the cars speed. (b) What is the magnitude and direction of the acceleration when the car is at point B? Figure P7.15
A race car starts from rest on a circular track with radius 100 m and begins to increase its speed by m/s each second. At what point in time is the car's vector acceleration directed 45° away from straight ahead? What is the magnitude of the resultant acceleration at that moment?
1. A pilot in a small plane encounters shifting winds. He flies 26.0 kmkm northeast, then 45.0 kmkm due north. From this point, he flies an additional distance in an unknown direction, only to find himself at a small airstrip that his map shows to be 70.0 kmkm directly north of his starting point. What was the length of the third leg of his trip? What was the direction of the third leg of his trip? 2. A boat can travel 7.3 m/s in still water. It is crossing a 220 m wide river while pointed due east and the river is flowing at 3.7 m/s, north. What is the speed of the boat, relative to the shore? How long does it take to cross the river? How far downstream does the boat end up? 3. A flock of ducks is trying to migrate south for the winter, but they keep being blown off course by a wind blowing from the west at 14 m/sm/s . A wise elder duck finally realizes that the solution is to fly at an angle to the wind. If the ducks can fly at 15 m/sm/s relative to the…
at t=0 an automobile travelling north begins to take a turn. it follows one quarter of a arc of a cirlce of radius 10.1m until t=2.1 where it is travelllign east. the car does not alter its speed. 1. what is the speed of the car? 2. what is the magnitude of the chnage in the cars velocity during the turn? 3. what is the magnitude of the average acceleration of the car during the turn? 4. what is the direction of the average acceleration during the turn of the car?
16. A plane is circling the airport with a speed of 145ms. The radius of the plane’s path is 1870m. How long does it take for the plane to complete 1 circle around the airport?t= s*Round your answer to the nearest thousandth if necessary.
2. A girl jogs around a horizontal circle with a constant speed. She travels one half of a revolution, a distance of 20.0 m along the circumference of the circle, in 8.00 s. a. What is the radius of the circle in meters? b. What is the period? c. What is her speed? d. What is her radial acceleration is?
1. What do you expect for the acceleration of the puck? Is it the same as, smaller or bigger than g sin 0?
7. A man drives 10miles to the north and then 20 miles to the east. What are the magnitude and directions of his displacement from the starting point? c. 28mi @ 40° above the horizontal d. 32mi @ 43° above the horizontal
Cars A and B are traveling around the circular racetrack. At the instant shown, A has a speed of 160 ft/s and is increasing its speed at the rate of 1.5 ft/s? until it travels for a distance of 100r ft, after which it maintains a constant speed. Car B has a speed of 220 ft/s and is decreasing its speed at 15 ft/s² until it travels a distance of 65n ft, after which it maintains a constant speed. Determine the time when they come side by side. TA- 400 ft ,- 390 ft
1. What is the radius r of the turn if θ=20° ( assuming the car continues in uniform circular motion around the turn)? Express answer in meters.
A ball is thrown at an initial height of 65 feet at an initial velocity of 75 feet/second at an angle of 65 degrees. Given the parametric equations yY = - - 16t + Vo · Sin(0)t + ho and x = Vo Cos(0)t. When doing calculations, carry 5 digits of accuracy, so your round off does not build up. a. What is the ball's height in 3 seconds? feet. seconds. b. When will the object hit the ground? feet. c. How far horizontally will the ball be when it hits the ground? seconds. d. When will the ball be at its maximum height? e. What is the ball's maximum height? feet. feet f. How far horizontally will the ball be when it reaches its maximum height?
An automobile whose speed is increasing at a rate of 0.6 m/s? travels along a circular road of radius 20.0 m. When the instantaneous speed of the automobile is 4.0 m/s, find the magnitude and direction of the total acceleration. 1.6 ms²² ; 53.1° inward from path a. b. 1.0 ms ?: 53.1° inward from path C. 1.6 ms2; 53.1° outward from path d. 1.0 ms 2; 53.1° outward from path e. none of the above