SOMEONE HELP ME PLEASE Free is the movement of an object towards earth solely because of gravity.

What is freefall? Free fall is when objects falling near earth’s surface accelerate downward at rate of 9.8 m/s2.

Give an example of an object in free fall

(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.)