4) Tarzan is hunting birds to make his dinner. He spots a 2.0 kg bird perched on a branch and fires a 500.0 g arrow at 40.0 m/s [30% above horizontal] from ground level. The arrow is travelling horizontally when it strikes the bird and remains embedded in the bird before continuing its flight and landing on the ground. How far must Tarzan walk to collect his dinner? (Answer: 85 m)