A cyclist travels from A to B along the arc of a circle of radius 25 m as shown.
Calculate (i) the distance travelled, (ii) the displacement undergone, by the cyclist.

James Carron
I'm guessing this answer will be too late and not useful but I'm going to fire away anyways
The distance travelled is simply 1/4 of the circumference of a 25m which can be found using 1/4 x 2x3.14x25 = 39.26990817 = Approximately 39.27m
The displacement is the straight line distance from the A to B. We can find this using Pythagoras theorem
Root(25squared plus 25squared) = 35.35533906m = approx 35.36m
I'm in 6th year myself and this was a simple question...
i later found the rest of the solutions here
http://www.loretobalbriggan.ie/physics/Sample%20problems%20and%20solutions/2003%20q6.pdf

Me
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