Two cars are moving towards an intersection. One car is 150 meters north of the intersection and moving towards the intersection at 20 m/s, while the other is 180 meters west of the intersection and moving towards the intersection at 16 m/s. How rapidly are the cars approaching each other 4 seconds later?

Two cars are moving towards an intersection. One car is 150 meters north of the intersection and moving towards the intersection at 20 m/s, while the other is 180 meters west of the intersection and moving towards the intersection at 16 m/s. How rapidly are the cars approaching each other 4 seconds later?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter6: Motion In Two Dimensions

Section: Chapter Questions

Problem 84A

See similar textbooks

Similar questions

Two cars approach a street corner at right angles to each other. One is red and one is blue. Both cars have the same speed of 40 km/hr. The blue car is moving due south and the red car is moving east. What is the velocity of the red car as seen by the observer in the blue car (find both the magnitude and the direction)?
A truck is traveling east at 80 km/h. At an intersection 32 km ahead, a car is traveling north at 50 km/h. How long after this moment will the vehicles be closest to each other?
A cat is sleeping on the floor in the middle of a 3.0 m wide room when a barking dog enters with a speed of 1.50 m/s. As the dog enters, the cat immediately accelerates at 0.85 m/s2 toward an open window on the opposite side of the room. The dog is a bit startled by the cat and begins to slow down at 0.10 m/s2 as soon as it enters the room. How far is the cat in front of the dog as it leaps through the window?
A convertible and a minivan leave a highway junction at the same time. The convertible travels west at 55 miles per hour and the minivan travels north at 65 miles per hour. Assuming the two vehicles do not deviate off course, how far apart are they after 2.5 hours?
Nathan is piloting a boat due south down the Murray River at a speed of 7.0m/s. At the same time Richard is piloting a boat up the river at a speed of 11.0m/s. Initially Nathan is 9.0km North of Murray Bridge and Richard is 6.0km South of Murray Bridge. How far are they from Murray Bridge when the two boats meet?
You’re speeding at 85 km/h when you notice that you’re only 10 m behind the car in front of you, which is moving at the legal speed limit of 60 km/hr. You slam on your brakes, and your car negatively accelerates at 4.2 m/s2 . Assuming the other car continues at constant speed, will you collide? If so, at what relative speed? If not, what will be the distance between the cars at their closest approach?
A seagull flies at a velocity of 7.5 m/s relative to the air straight into the wind. vSA = 7.5 m/s t = 23 min d = 6.8 km If it takes the bird 23 min to travel 6.8 km relative to the Earth, what is the velocity of the wind, in meters per second, relative to the Earth? Take the direction of travel of the seagull to be positive.
Boat A and B leave the same place at the same time. Boat A heads due north at 12km/hr. Boat B heads due east at 18km/hr. After 2.5 hours, how fast is the distance between the boats increasing (in km/hr)?
Car A is driving south, away from an intersection. Car B is approaching the intersection and is moving west. At what rate is the distance between the cars changing at the instant when car A is 40 miles from the intersection and traveling at 55 mph and car B is 30 miles from the intersection and traveling at 45 mph? Are the cars getting closer together or farther apart at this time?
A “moving sidewalk” in an airport terminal moves at 1.0 m/s and is 35.0 m long. If a woman steps on at one end and walks at 1.5 m/s relative to the moving sidewalk, how much time does it take her to reach the opposite end if she walks (a) in the same direction the sidewalk is moving? (b) In the opposite direction?
from two towns d = 24 km apart. Josh rode at Vj = 25 km/h, and Mike at um = 15 km/h. The moment they start, a fly also starts from Josh towards Mike and after reaching Mike, immediately returns towards Josh. The fly continues back and forth motion between the cyclists till the cyclists meet. Air speed of fly is Uf = 30 km/h and the wind blows always towards Mike with a constant velocity u = 10 km/h. Find the total distance s flown by the fly.
Two cars leave from an intersection at the same time. Car A travels south at 80 km/h, while car B travels east at 60 km/h. At what rate is the distance between the cars increasing one hour later?