Ahelicopter travels west at 80 mph. it is moving above a car traveling on a highway at 80 mph. given this information, you can determine that the helicopter and car are traveling
a. in the same direction
b. in different directions
c. at the same speed
d. at the same velocity

technically, there travelling a the same speed, yet at the same direction? can anyone pls !

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].