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A car moves along the x axis. What is the sign of the
Chapter 2, Problem 2EC(choose chapter or problem)
A car moves along the x axis. What is the sign of the car’s acceleration if it is moving in the positive x direction with (a) increasing speed or (b) decreasing speed? What is the sign of the acceleration if the car moves in the negative x direction with (c) increasing speed or (d) decreasing speed?
Questions & Answers
QUESTION:
A car moves along the x axis. What is the sign of the car’s acceleration if it is moving in the positive x direction with (a) increasing speed or (b) decreasing speed? What is the sign of the acceleration if the car moves in the negative x direction with (c) increasing speed or (d) decreasing speed?
ANSWER:Step 1 of 4
(a)
When the car is moving in a positive x direction with increasing speed, the acceleration of the car is also positive, hence its positive.