Which of the following pieces of ticker tape shows that the object is speeding up its motion?(Note: Suppose that the left hand side of the ticker tape shows the initial point of the tape.)
Correct answer: B. Option B
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
A ticker timer makes dots at regular intervals of time. If the dots are far apart, the object moved a long distance in that time (high speed). If they are close together, it moves a short distance (low speed).Since the note specifies that the left side is the starting point, we read the motion from left to right. According to this, Option B would be correct as the distance between the dots increases from left to right.
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About Acceleration
Acceleration measures the rate at which velocity changes with time, including changes in speed, direction or both. Work includes average and instantaneous acceleration, the relation a = Δv/Δt, uniform acceleration equations, and interpreting velocity time and displacement time graphs, with acceleration carefully distinguished from velocity.
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