Hi. I need help with these three questions please and thank you!

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Two chunks of space debris collide head-on in an elastic collision. One piece of debris has a mass of 2.67 kg. The other chunk has a mass of 5.83 kg. After the collision, both chunks move in the direction of the second chunk's initial velocity with speeds of 185 m/s for the smaller chunk and 172 m/s for the larger. What are the initial velocities of the two chunks?Question 1: A hockey puck of mass 0.16 kg, sliding on a nearly frictionless surface of ice with a velocity of 2.0 m/s [E]. strikes a second puck at rest with a mass of 0.17 kg. The first puck has a velocity of 1.5 m/s [N 310 E] after the collision. Determine the velocity of the second puck after the collision. m Question 2: Two hockey pucks of equal mass approach each other. Puck 1 has an initial velocity of 20.0 m/s [$ 45* E], and puck 2 has an initial velocity of 15 m/s [$ 45* W]. After the collision, the first puck is moving with a velocity of 10.0 m/s [$ 45* W]. Qu mo (a) Determine the final velocity of the second puck. (b) Is this collision elastic, perfectly inelastic, or (non-perfectly) inelastic? Explain your reasoning