A Block of Mass M = 8

question 23

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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Definitions:

Punishment

A consequence imposed after an undesirable behavior, aimed at reducing that behavior.

Negative Reinforcement

A behavioral concept where the removal of an unfavorable event strengthens the behavior that led to its removal.

Extinction

In the context of behavior, the gradual reduction and eventual elimination of a conditioned response.

Successive Approximations

This is a method in behavioral psychology where behaviors are gradually trained by rewarding approximations of the desired behavior.