A Tractor T Is Pulling a Trailer M with a Constant

question 105

Multiple Choice

A tractor T is pulling a trailer M with a constant velocity. If the velocity is 20 m/s and M = 200 kg and T = 500 kg, then the force on the trailer due to the tractor is (assume there is no friction or air resistance)

• A) 600 N forward.
• B) 450 N backward.
• C) 200 N backward.
• D) 35 N forward.
• E) 0.

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Reinforcement

In operant conditioning, what occurs when a behaviour increases in frequency as a result of consistent consequences.

Problem Solving

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