-A Block of Mass M = 2

question 35

Multiple Choice

-A block of mass m = 2.2 kg,moving on frictionless surface with a speed v_i = 9.1 m/s,makes a perfectly elastic collision with a block of mass M at rest.After the collision,the 2.2 kg block recoils with a speed of v_f = 0.7 m/s.In the figure,the mass M is closest to:

• A)2.6 kg
• B)18.48 kg
• C)2.4 kg
• D)31 kg
• E)2.2 kg

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Definitions:

Green-circle Rate

A situation in wage-setting where an employee's pay is below the minimum of the range set for their job class, often due to an anomaly or an exception in the salary structure.

Rank-and-file Adjustment

Changes or modifications made to the conditions or ranks of the general workforce, not the leadership or management.

Uniformed Services Employment and Reemployment Rights Act

A federal law that provides job protection and rights for military service members upon their return to civilian employment.

Fair Labor Standards Act

A United States law that creates the right to a minimum wage, and "time-and-a-half" overtime pay when people work over forty hours a week, among other protections for workers.