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rdmfresno
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Homework Statement
A race car races on a circular racetrack of radius (r).
(a) Write an equation for the car’s average speed when it travels a complete lap in time (t).
(b) The radius of the track is 400m and the time to make a lap is 40s. Show that the average speed around the track is 63m/s.
Homework Equations
Average Speed = Total Distance/ Travel Time
The Attempt at a Solution
(a) speed = distance/time ?
(b) 400m x 3.14 = 1256m.
63m/s = 1256m/40s.. this is where I get lost. This obviously isn't right. I'm getting an average speed of 31.4m/s.