Relative velocity Definition and 416 Threads

Ship A travels at 3m/s due NE, ship B travels at 2.6 m/s in direction S30E. a. What are the magnitude and direction of the velocity of ship A relative to ship B? b. After what time will they be 140m apart? I have found the answer to be 4.45m/s But I don't know whether it is true...and I...

I think I'm thinking to hard for this one, so I'll wait till tomorrow before checking up with you guys. I'll let my brain freshen up first. Yes, I have a "thing" for figuring it out on my own. Anyways, it's a question from David Hogg's book, so it is NOT my homework. Problem 2-8 Two...

I am having difficulty with Problem 49 of Chapter 3 from Physics for Scientists and Engineers by Paul A. Tipler, 4th Edition: Airports A and B are on the same meridian, with B 624 km south of A. Plane P departs airport A for B at the same time that an identical plane, Q, departs airport B...

The dispute over the truth of SR or not is passionately described in the context of relativity and the measurement of the speed of light. SR theorists impose the impossible physical consideration that in measuring the relative velocity of frame and photon that the frame is considered...

Anyone attempting to argue the Special Theory of Relativity needs to understand the basics of how light travels, and how we perceive it. Einstein wrote that the speed of light does not depend on the speed of the object emitting the light. To prove this, Einstein referred to De Sitter’s...

Hi there, i am a cambridge student studying in the first year of O levels. Though relative velocity isn't in my syllabus, ihave inerest in gaining knowledge about it. I studied the topic, but was unable to do some of the exercise questions. One question which i foind difficult is as...

Hey i would appreciate if some1 is able to help me out here... this is the question: A pilot wants to fly her plane to a lake that is 250.0km [N30.0'E] from her starting point. The plane has an air speed of 210.0km/h, and a wind is blowing from the west at 40km/h. a) Calaculate in what...

From the reference point of a photon, at what velocity are the photons around it traveling at? I'm asking it because doesn't light ALWAYS travel at light speed, no matter what the reference point? Does that principle only apply to things that are not photons or gravitational disturbances, or...

Hey I’m just having a bit of trouble with this relative velocity question: This is what I've got so far: Work so far. I think I've gotten a part a right, and I've made a start on a part b, but I am pretty much lost on part b (i) and (ii). Any help would be appreciated. (v =...

Hey I need a little help with this (B) question: Find: (I) P and Q (II)How long will it take her to swim in a straight line back to the original starting point. Ive done some of the basics here, which i know to be right, including the answers to part 1 - when i tried to bring it further...

Id be very grateful for any help with this relative velocity question: To a man walking North at 4m/s, a constant wind appears to have a speed f 3m/s. The man then changes direction, and when he is walking West at 3m/s the wind appears to have a speed of 4 m/s. There are two possible wind...

How long does it take an automobile traveling in the left lane at 60.0 km/hr to pull along side a car traveling in the right lane at 40.0 km/hr if the cars' front bumpers are initially 100 m apart? I know the velocity of the car in the left is 60 and the velocity of the car on the right is...

Can someone please explain in relative velocity please?

river current = 22 m/s [South] width of the river from one side to the other = 325m speed of person swiming = 47 m/s if the person travels 47 m/s [E 7.5 degrees S] then how far up or down the stream will he end up when he reaches the other side?

Here the question, A swimmer wants to cross a river, from point A to point B. The distance d_1 (from A to C) is 200 m, the distance d_2 (from C to B) is 150 m, and the speed v_r of the current in the river is 5 km/h. Suppose that the swimmer makes an angle of theta=45 deg. (0.785 radians)...

A small air plane is traveling at a velocity relative to the air of 100km/h [E]. A wind from the north is blowing at 20km/h. (a) Determine the position of the airplane after 2.5 h of this motion. (b) Find the average velocity of the airplave during the 2.5 h interval. Thanks a Lot...