A Block of Mass M = 8

question 214

Multiple Choice

A block of mass m = 8.40 kg,moving on a horizontal frictionless surface with a speed 4.20 m/s,makes a perfectly elastic collision with a block of mass M at rest.After the collision,the 8.40 block recoils with a speed of 0.400 m/s. In the figure,the blocks are in contact for 0.200 s.The magnitude of the average force on the 8.40-kg block,while the two blocks are in contact,is closest to

• A) 193 N
• B) 185 N
• C) 176 N
• D) 168 N
• E) 160 N

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Elements or conditions in the workplace that can influence employee performance and job satisfaction.

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