Problem 1 Suppose a 350-g kookaburra (a large kingfisher bird} picks up a 75- g snake and raises it 2.5 m from the ground to a tree branch. (a) How much work did the bird do on the snake? (b) How much work did it do to raise its own center of mass to the tree branch? l'llul u by [J ur'ui I1 VL'YI'IIM IIUII Problem 2 A car's bumper is designed to withstand a 4.0-km/h (1.12-m/s) collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance. Calculate the magnitude of the average force on a bumper that collapses 0.200 m while bringing a 900-kg car to rest from an initial speed of 1.12 m/s. Problem 3 Cars that accelerate zero to 60 mph in under 4 seconds are typically relatively luxurious cars with engines of 400+ Hp...think Porsche 911 and Audi RS3. The cheetah is one of the fastest-accelerating animals, because it can go from rest to 60 mph in a mere 4.0 seconds! (a) If the cheetah has a mass is 110 kg, determine the average . _ _' . power output by the cheetah during the m... mwmmmuam\"shamanism acceleration phase of its motion. Express your answer in watts and in horsepower. (b) As a second comparison, what is the power output in watts and horsepower of a 70.0-kg olympic sprinter who accelerates from rest to 36 km/ h in 2.4 s