Is the particle in FIGURE Q1.3 speeding up? Slowing down? Or can you tell? Explain.
Figure Q1.3
Solution:
The diagram does not indicate any position in time that should have been represented by numbers on the dots. Without numbers on the dots we cannot tell if the particle in the figure is moving left or right, so we can’t tell if it is speeding up or slowing down. If the particle is moving to the right it is speeding up. If it is moving to the left it is slowing down.
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