Number 4 and 5 show all work for physics

4) Suppose quantity s is a length and quantity / is a time. Suppose the quantities v and a are defined by ds V= dt - and a = # (a) What is the dimension of v? (b) What is the dimension of the quantity a? What are the dimensions of (c) J vdt, (d) S adt , and (e) at ? 5) Consider the equation s = a + =bt? + =ct3 + - dt* where s is a length and / is a time. What are the dimensions and SI units of (a) a, (b) b. (c) c, and (d) d