A small puck is sliding to the right with momentum (vec{p}_{mathrm{i}}) on a horizontal, frictionless surface, as

Question:

A small puck is sliding to the right with momentum $\vec{p}_{\mathrm{i}}$ on a horizontal, frictionless surface, as shown in Figure Q9.24. A force is applied to the puck for a short time and its momentum afterward is $\vec{p}_{\mathrm{f}}$. Which lettered arrow shows the direction of the impulse that was delivered to the puck? image text in transcribed