My Math Forum relative velocities
 User Name Remember Me? Password

 Algebra Pre-Algebra and Basic Algebra Math Forum

 February 16th, 2010, 09:30 AM #1 Senior Member   Joined: Sep 2008 Posts: 199 Thanks: 0 relative velocities An airplane A which can fly at a maximum speed of 800 km/h is going to overtake airplane B. Airplane B is flying to the east with a speed of 500km/h. Initially, B is at a position 100km and on a bearing of 240 degree from A. (1) Find the minimum speed required of A to overtake B. (2) If A flies at a speed of 400 km/h, find two possible directions of A so that A will be able to overtake B. So I know I will have to start with a diagram, with A flying perpendicular to B for the minimum speed for (1)? Not sure bout (2).
 February 18th, 2010, 03:08 PM #2 Global Moderator   Joined: Dec 2006 Posts: 20,302 Thanks: 1972 The maximum speed of A is irrelevant in this question. The word "overtake" isn't clear when A and B are flying in different directions, so I am not sure what the question means by "overtake B". If A flies in a constant direction at the lowest speed that allows it to intercept B, it would be more reasonable to say that B overtakes A at the time of interception than that A overtakes B, and the same is true if A flies at 400 km/h. You should perhaps assume that "overtake" is to be interpreted as "intercept".

 Tags relative, velocities

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post Solarmew Physics 0 May 16th, 2013 04:20 PM echilon Computer Science 1 June 19th, 2012 09:51 AM jsierra1987 Algebra 3 January 11th, 2012 12:36 PM ArmiAldi Calculus 4 March 11th, 2008 05:42 PM Solarmew Algebra 0 December 31st, 1969 04:00 PM

 Contact - Home - Forums - Cryptocurrency Forum - Top