I throw a ball of mass 2kg straight up in the air with a speed of 5 m/s. at the top of the balls arc, how much potential energy does it have? a. 10 J
b. 50 J
c. 0 J
d. 25 J

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].