looking at #1 Focus on Concepts Note to Instructors: The numbering of the questi

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looking at #1

Focus on Concepts Note to Instructors: The numbering of the questions shown here reflects the fact that they a online. However, all of the questions are available for assignment via an online homework Section 4.2 Newton's First Law of Motion 1. An object is moving at a constant velocity. All but one of the follow- dire ing statements could be true. Which one cannot be true? (a) No forces act on the object. (b) A single force acts on the object. (c) Two forces Sec act simultaneously on the object. (d) Three forces act simultaneously 7. W on the object. 3. A 24° s moti ary cup of coffee is sitting on a table in a recreational vehicle (RV). The cup slides toward the rear of the RV. According to Newton's first law, which one or more of the following statements could describe the motion of the RV? (A) The RV is at rest, and the driver suddenly accelerates. (B) The RV is moving forward, and the driver suddenly accelerates. (C) The RV is moving backward, and the driver suddenly hits the brakes. forc thro than go i off v are peA R and C

Explanation / Answer

1)

Since object is moving at constant velocity, acceleration of object is 0

So,

no net force acts on object

there can be more than one force acting on the object such that net force on the object is 0 but there can’t be a single force

because if only force acts on the object, net force will never be 0

there can be no force acting as well.

there can’t be only one force

So, b is wrong statement

Answer: b

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