2. An object moving near the Earth's surface has its motion described by the following velocity vector in the time interval from 0.0 to 10.0 s. v = [(1.50 3:2] 2+ [(9.80 at + (48-0 9b\" where t is in seconds and i and j represent the unit vectors along the x- and y- axes. The x- axis is parallel to the earth's surface and the y-axis is directed vertically above the surface of the earth. Determine a. The object's acceleration as a function of time b. The obj ect's velocity when it reaches the highest point, and c. The position vector of the object when it reaches the highest point, if it starts from the origin at t = 0.0 s