SOLUTION: Stacy who has a mass of 40kg, glides on the ice at 2.0 m/s toward a 15-kg sled at rest on the ice. She reaches the sled and holds onto it, and she and the sled continue sliding in

Question 1063983: Stacy who has a mass of 40kg, glides on the ice at 2.0 m/s toward a 15-kg sled at rest on the ice. She reaches the sled and holds onto it, and she and the sled continue sliding in the same direction Stacy was going before the collision. What is their speed?
Answer by ikleyn(52756) (Show Source): You can put this solution on YOUR website!
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Stacy who has a mass of 40kg, glides on the ice at 2.0 m/s toward a 15-kg sled at rest on the ice. She reaches the sled and holds onto it,
and she and the sled continue sliding in the same direction Stacy was going before the collision. What is their speed?
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Apply the "Momentum conservation Law", which says in this case

40*2.0 = (40+15)*v,

and find the unknown speed "v" from this equation

v =  meters-per-second.

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