Position-Time Graphs & Velocity Video Lessons

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Problem:  shows the position-versus-time graph for a moving object.(A) At which lettered point or points is the object moving the fastest?(B) At which lettered point or points is the object speeding up?(C) At which lettered point or points is the object moving to the left, if the positive x-direction corresponds to its rightward movement?(D) At which lettered point or points is the object turning around?

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In the figure, we are given a position-time graph. We'll recall concepts associated with velocity-time graphs and answer the questions.

(A) The object moves fastest at the point on the curve where the slope is the greatest. 

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Problem Details

The graph shows position as a function of time. No units are given. Position starts with a constant-negative-value-segment from which it rises smoothly to a positive value. From that value position smoothly decreases to 0. Six points are positioned on the curve. Point A is at the middle of the constant-negative-value-segment. Point B is on the rising slope at a negative position value. Point C is on the rising slope at the interception with the x-axis. Point D is on the rising slope at a positive position value. Point E is at the maximum positive position value. Point F is on the dropping slope at the same positive value of the position as point D. 

shows the position-versus-time graph for a moving object.

(A) At which lettered point or points is the object moving the fastest?

(B) At which lettered point or points is the object speeding up?

(C) At which lettered point or points is the object moving to the left, if the positive x-direction corresponds to its rightward movement?

(D) At which lettered point or points is the object turning around?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Position-Time Graphs & Velocity concept. You can view video lessons to learn Position-Time Graphs & Velocity. Or if you need more Position-Time Graphs & Velocity practice, you can also practice Position-Time Graphs & Velocity practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Anderson's class at SDSU.