A 1 kg mass (initially at rest) compresses a spring (spring constant 2500 N/m) b

Question

A 1 kg mass (initially at rest) compresses a spring (spring constant 2500 N/m) by 0.2 m, and is released. The mass slides along a horizontal, frictionless table until it collides totally (perfectly) inelastically with an identical mass at rest. a)What is the velocity of the 1 kg mass before hitting the second 1 kg mass? b)What is the velocity of the two masses after they collide and stick together? c)After colliding and sticking together, the two masses move up a frictionless inclined plane. What is the maximum height achieved by the two masses?

Explanation / Answer

spring energy =KE .5kx^2=.5mv^2 a) v=10m/s b)momentum=> 1*10=2*v v=5m/s c)conservation of energy .5mv^2=mgh h=1.276 m

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