2. A package is dropped from a plane traveling at a constant horizontal velocity. If the plane maintains its course, where will the package land with respect to the plane overhead?
D - Behind the plane
E- Under the plane
F- In front of the plane

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)