Question

A toy train traveling around a circular track 2 meters in
radius, and it takes 4.5 seconds to complete a circle. What is
its velocity?
give all explanation by solving the equation

Answer 1

Explanation:

My answer is: 1,413 km / hr or 1413 meters per hour.

First we must find out the circumference of the track in question. The formula for this is 2 multplied with pi multiplied with the radius. We get: 2*3,14*2,5 m, which is equal to 15,7 m. Now we can divide 15,7 with 4 and then multiply the answer with 6 and we get the speed per minute. (15,7/4)*6 = 23,55 m / minute. We can now multiply this with 60, and we then get the speed in meters / hour. 60*23,55 m = 1413 meters per hour, which is equal to 1,413 km /hr.