From Fig. 2.1, state the terminal velocity of the skydiver.
Using a suitable line drawn on Fig. 2.1, determine the skydiver’s acceleration at time $t = 9.0\ \text{s}$.
The combined mass of the skydiver and her equipment is $68\ \text{kg}$. Upthrust on the skydiver can be ignored. Once terminal velocity has been reached, the skydiver opens her parachute at time $t_1$. The drag force acting on the skydiver is $1800\ \text{N}$. Determine both the size and the direction of the skydiver’s acceleration at time $t_1$.
The parachute is completely open at time $t_2$. At a later time $t_3$ the skydiver has a steady velocity of $5.7\ \text{m s}^{-1}$. Describe and explain how the magnitude of her acceleration varies with time between $t_2$ and $t_3$.
Calculate the change in momentum of the skydiver between time $t_1$ and time $t_3$.