Runners
When will two runners moving in different directions meet at the same point?
Runner A is initially 6 km west of a flagpole and is running with a constant velocity of 9.0 km/h due east. Runner B is initially 5.0 km east of the flagpole and is running with a constant velocity of 8.0 km/h due west. What will be the distance of the two runners from the flagpole when their paths cross?
Well, this is really a d = rt problem, where you can add your rates to the total distance. So, you know the first rate will be 9t, and the second 8t. You don’t know the individual distances for the runners, but you know the combined distance will be 11. So you can add your rt’s to get 17t = 11, so t = 11/17. Therefore, when they meet, the second runner will have run 11/17(8) km = approx. 5.1765 km. So, if he starts out 5 km due east of the flagpole, he will be 5.1765 – 5 = .1765 km west of the flagpole. Hope this helps,
Felix
Free RunnErs
|
|
Sublime Imprint Anti-Fatigue Nantucket Series Comfort Mat $99.99 5200 Size: 20″ x 36″ Machine made mat Features: -Material: PVC.-Origin: South Korea.-Environmentally friendly.-20” x 36”.-20” x 72”. Construction: -Construction: Machine made. Color/Finish: -Color: Cinnamon. Collection: -Collection: Nantucket…. |
|
|
Rum Runner Cruise Kit $21.95 Each Rum Runner Cruise Special Kit contains three of our 32oz Travelers and three 8oz easy filling, heavy duty, collapsible flasks and one funnel. Our 32oz Travelers are perfect for taking your favorite beverage in your checked luggage and they make having that cocktail while relaxing before dinner effortless. The 8oz pocket flasks are great for those side trips or on deck. The Flasks are made of … |
|
|
Shampbooze $6.99 Shampbooze lets you sneak 32oz of your favorite alcohol onto your cruise in your checked luggage. These are brand new virgin food grade faux plastic shampoo and conditioner bottles. We redesign the label every few months to keep under the radar. We also blurr out the label to protect its identity. They are three times tougher than rum runners. If your bags do get checked there will be no obvio… |
|
|
Clockwork Angels $14.88 Legendary rock band Rush have unveiled details of its highly anticipated 2012 album, Clockwork Angels. The recording of Clockwork Angels began with Grammy Award winner Nick Raskulinecz (Foo Fighters, Deftones) who collaborated with the band on their 2007 studio album, Snakes and Arrows – and Rush co-producing. Lyrically, Clockwork Angels chronicles a young man’s quest across a lavish and colorful … |
|
|
Storm Corrosion $8.25 Storm Corrosion is the long-discussed and highly anticipated collaboration between two of the modern progressive rock scene’s most innovative and multi-talented artists: Mikael Åkerfeldt of Opeth and Porcupine Tree s Steven Wilson. “It s very hard to describe this music as it is so different from most things around right now (at least as far as I know),” said Wilson. “I said it was the “opposite … |
|
|
Here & Now $7.74 NICKELBACK HERE AND NOW… |
|
|
SABRE RED Jogger Pepper Spray with Hand Strap $5.99 KEY CHAIN DEFENSE SPRAYSABRE\’s Advanced 3-in-1 Formulation combines Red Pepper, CS Military Tear Gas & UV Marking Dye to provide maximum protection. The distance ranges from 8-10 ft. Ballistic stream spray pattern, decreases wind blow-back.Key Chain: approx. 25 shots, quick release key ring & belt clip. Wt: .54 oz.Jogger: approx. 35 shots, adjustable hand strap. Wt: .75 oz.Cyclist: approx. 60… |
|
|
Petzl E91 PE Tikkina 2 Headlamp, Electric Blue $17.96 The TIKKINA 2 headlamp is designed to meet everyday lighting needs. It has two lighting modes (maximum and economic) to adapt light quantity to the situation. It is also equipped with new, improved performance LEDs and a push-button switch. The compartment now has an easy-to-use system that allows the user to very easily change the batteries or to equip the headlamp with the ADAPT mounting system…. |
|
|
Bosch T5002 10-Piece Assorted T-Shank Jig Saw Blade Set $8.00 Includes (2) each of the most requested jigsaw blades: T101B, T144D, T119BO, T118A and T118B. In reusable plastic storage box. Bosch is the world-wide market leader for jig saw blades. This means uncompromising quality, innovative ideas and universal use. Whether for miter, straight or curved cuts, Bosch sells the right saw blade designed for high performance in all major brand jig saws…. |
|
|
Yoga for Beginners Boxed Set (Yoga for Stress Relief / AM-PM Yoga for Beginners / Essential Yoga for Inflexible People) $14.99 Everything You Need To Get Started And Progress With Yoga! Yoga For Beginners Deluxe 3 Dvd Setis The Perfect Way To Explore And Experience The Numerous Benefits Of Yoga. Each Of These 40 Routines Focuses On Different Physical And Mental Aspects Of Yoga, Such As Building Strength, Improving Flexibility, Reducing Stress And More! Never Before Has A Has A Single Collection Of Yoga Dvds Contained So M… |
March 14, 1994 3:49 pm 
Subscribe