Question

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3) A heavy penguin (of mass 12 kg) and a light penguin (of mass 6 kg) are sitting peacefully on a snowy slope. The slope tilts above level ground at an angle of 10 degrees. The heavier penguin is higher up on the slope than the light one and launches itself down the slope, moving at a constant speed of 3 m/s. How fast will the two penguins be moving after the heavy one collides with the lighter one? Answer: Submit All Answers 4) Consider the same original setup as above, but now, instead of sliding constantly, the heavy penguin is sliding on an icy part of the slope so friction is very low. Suppose that the heavy penguin is initially at rest, but it accelerates frictionlessly down the slope. If it takes 2 seconds for the penguins to collide, how much external impulse will have been exerted on the heavy penguin until the instant before the collision occurs? Answer: Submit Al Answers

Answer 1

from conservation of momentum , on mu, =conitma) v 12 (3)= (1276) v V= amis