1)Two trains, each with a speed of 30km/h are headed at each other on the same straight track.A bird that fly 60km/h flies off one train when they are 60km apart & heads directily for the other train.On reaching the other it flies back &so on.what is the total distance travelled by the fly??? 2)2 mirrors moves each other with a speed of Vm/s each.a particle starts from one mirror when the mirrors are seperated by d metre.On reaching the 2nd mirror it bounces back & so on.Total distance travelledby particle ???? Sir , is there any general methods for this type of problems??????????????????????pleese explain it ....................................................

Hrishant Goswami , 11 Years ago

Grade 10