2.List two changes an unbalanced force can cause.

(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.)

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Which of the the following are examples of projectile motion of both projectile motion and two dimensional motion