1. A 124-g rock traveling at a speed of 33 m/s hit a stick and moves back along its incoming path with a speed of 40 m/s. What is the impulse delivered to the tock by the stick? If the duration of the

1. A 124-g rock traveling at a speed of 33 m/s hit a stick and moves back along its incoming path with a speed of 40 m/s. What is the impulse delivered to the tock by the stick? If the duration of the stick-rock collision is 0.0008s, what is the average force exerted by the stick on the rock?2. A fireworks rocket is shot straight up in the air. Its mass 3.80 kg, explodes just as it reaches its peak height and separates into two fragments before eventually exploding again into spiraling colors. The first fragment, of mass 1.1 kg, heads straight down with an initial speed of 15 m/s. What is the velocity of the second fragment immediately after the explosion?

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