Physics :)
posted by Christina .
John and Joan walk in opposite directions around a circular path, starting from the same point. The path has a radius of 50.0 meters. John walks at 1.00 m/s, Joan at 1.25 m/s. How long will it take for them to meet?
Can someone please explain this to me?! I keep getting it wrong and I only have one try left!

John: v1 = 1 m/s, distance “x”
Joan: v2=1.25 m/s, distance (2πRx).
t= x/v1 =(2πRx)/v2.
v2•x =(2πRx) •v1 = 2πR•v1 v1•x,
x(v1+v2)= 2πR•v1,
x=2πR•v1/(v1+v2)=2•π•50•1/2.25=139.6 m.
t= x/v1=139.6/1 = 139.6 c.
Respond to this Question
Similar Questions

math
Fred begins walking toward John house at 3 mi/h. John leaves his house at the same time and walks toward Fred's house on the same path at a rate of 2 mi/h. How long will it be before they meet if the distance between the houses is … 
trick question
John, Jack, Joan and Jane are Art Critic, Aviator, Acrobat and Architect, though not necessarily in that order. The aviator, who is happily married, earns more than his sister, the art critic. Joan has never heard of “perspective”, … 
12 data management
3 oeople  john joan and kim throw a ball to each other. there is a probability of 1/3rd that johnwill throw it to joan. probability of 1/2 that joan wil throw it to kim. probability of 1/4th that kim will throw it to john. A. show … 
Joan of Arc
Are these correct?: France is fighting England and they are being helped by the Burgundians right? 
Physics
Two people start at the same place and walk around a circular lake in opposite directions. One walks with an angular speed of 1.10 103 rad/s, while the other has an angular speed of 3.90 103 rad/s. How long will it be before they … 
physics
Two people start at the same place and walk around a circular lake in opposite directions. One walks with an angular speed of 1.40 103 rad/s, while the other has an angular speed of 3.10 103 rad/s. How long will it be before they … 
Physics
A person walks the path shown below. The total trip consists of four straightline paths. Path 1 is 40.0 m due east. Path 2 is 170.0 m due south. Path 3 is 120.0 m 30.0° south of west. Path 4 is 190.0 m 60.0° north of west. At the … 
Pre Calculus
A park has a circular walking path with a diameter of 250 meters. a) Write the equation to describe the walking path in your diagram. b) Find the distance traveled by someone walking once around the entire path. c) Find the distance … 
physics
a woman walks along a circular path of radius of 15m it takes her 2min to get halfway around the path at this halfway point what is her approximate distance traveled, displacement, average speed in m/s, and average velocity in m/s? 
physics
You create a centripetal force apparatus consisting of a mass m attached to the end of a string and spun in a uniform circular path of radius R, where R = 65.5 cm. The mass is spun in a uniform circular path for 60.0 seconds, during …