: A 65 kg speed skater is racing around a circular track. The track has a radius of 20 m. It takes the skater 10 seconds to complete one lap.
a. Calculate the velocity of the skater.
b. Calculate the skater's acceleration.
C. Calculate the centripetal force of the skater.

The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].