IB Physics SL A 1 9 Fluid Resistance on Projectiles Topic Practice

This question is about kinematics.

After the stone in (a) hits the water surface it rapidly reaches a terminal speed as it falls through the water. The stone leaves Fiona's hand at time t=0. It hits the water surface at $t_{1}$ and it comes to rest at the bottom of the water at $t_{2}$. Using the axes below, sketch a graph to show how the speed v of the stone varies from time t=0 to just before $t=t_{2}$. (There is no need to add any values to the axes.)