A Block of Mass M Slides Without Friction on a Table

question 6

Multiple Choice

A block of mass m slides without friction on a table with speed v. It hits and compresses a spring of force constant k by a distance l. The spring then expands again ejecting the block in the opposite direction as it was originally traveling. Neglecting the mass of the spring, what is the speed of the object after it is ejected by the spring?

• A) v/2
• B) 2v
• C) v
• D) 4v
• E) v - l

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Definitions:

Zone of Proximal Development

A concept in educational psychology referring to the difference between what a learner can do without help and what they can achieve with guidance and encouragement from a skilled partner.

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