A constant horizontal force Fa pushes a 1.50 kg FedEx package across a frictionless floor on which an xy coordinate system has been drawn.

A constant horizontal force Fa pushes a 1.50 kg FedEx package across a frictionless floor on which an xy coordinate system has been drawn. Figure 5-37 gives the package's x and y velocity components versus time t. (The vx axis is marked in increments of 1 m/s and the vy axis is marked in increments of 2 m/s.) What are the (a) magnitude and (b) direction of a (angle clockwise from +x axis)?