Question

Skater A and B crash into each other during practice. Skater A's mass is 60 kg and skater B's mass is 50 kg. Just before the collision occurs, skater A's velocity is 5 m/s and B's velocity is -6 m/s in the opposite direction. During the collision, skater A exerts an average force of +1000 N against B. (Pay attention to the positive/negative direction of velocity and force.) a. How large is the average force B exerts against A during the collision? b. If these are the only horizontal forces acting on each skater during the collision, what average horizontal acceleration does each skater experience during the collision, respectively? c. If the collision is perfectly inelastic, how fast and in what direction will skater A and B move immediately after the collision?

          Skater A and B crash into each other during practice. Skater A's mass is 60 kg and skater B's mass is 50 kg. Just before the collision occurs, skater A's velocity is 5 m/s and B's velocity is -6 m/s in the opposite direction. During the collision, skater A exerts an average force of +1000 N against B. (Pay attention to the positive/negative direction of velocity and force.)

a. How large is the average force B exerts against A during the collision?
b. If these are the only horizontal forces acting on each skater during the collision, what average horizontal acceleration does each skater experience during the collision, respectively?
c. If the collision is perfectly inelastic, how fast and in what direction will skater A and B move immediately after the collision?

Added by Kristina G.

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