(a(i))[3]
Calculate the resultant vertical force and state its direction.
(a(ii))[2]
Suggest and explain what happens to the size of the upward vertical force on the parachute if the area of the parachute used is increased.
(b(i))[1]
Determine the time when the speed of the box is $30\,\text{m s}^{-1}$.
(b(ii))[2]
Deduce the size of the resultant vertical force on the box when the time is $35\,\text{s}$. Explain your answer.
(b(iii))[3]
Calculate the distance the box travels between time = $30\,\text{s}$ and time = $40\,\text{s}$.