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A solid block of mass m2 = 2.3 kg, at rest on a horizontalfrictionless surface,...

A solid block of mass m2 = 2.3 kg, at rest on a horizontal frictionless surface, is connected to a relaxed spring (with spring constant k = 260 N/m whose other end is fixed. Another solid block of mass m1 = 2.2 kg and speed v1 = 3.3 m/s collides with the 2.30 kg block. If the blocks stick together, what is their speed immediately after the collision?


What is the maximum compression of the spring?

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Answer #2

Immediately after the collision the spring will not yet be compressed so it can ignored and the conservation of momentum applies.

Momentum before collision = 1.5 . 3.1

Momentum after collision = (1.5 + 1.7 ) V = 1.5 . 3.1

V = 1.45 m/s

This should be given as 1.5 m/s as the data support only 2 sf.

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