- #1

- 7

- 0

(A) write the equation of motion:

ok so i know v=dx/dt

and ive said f=m(dv/dt)

so f=m(dv/dt)=-mg-mkv??? because theyre opposite

I can't think what else to write, since this is 5 marks.... unless i need sort this in terms of ODE's where g and k are constants?

(B) calculate velocity as a function of time, and the limiting velocity at very large time.

so i need v(t)? from v=dx/dt and this is where i use ODE's and work out V.

again i can't see where the marks come from this is worth 8.