Mechanics: 1-Dimensional Kinematics
1-D Kinematics: Audio Guided Solution
Problem 10:
The position-time graph below represents the motion of South's basketball coach during the last sixteen seconds of overtime during this past weekend's game.
Use the graph to answer the next several questions.
a. Determine the total distance walked by the coach during these 16 seconds.
b. Determine the resulting displacement of the coach during these 16 seconds.
c. Determine the displacement of the coach after 12.0 seconds.
d. At what time did the coach have the greatest displacement from his starting position?
e. What was the fastest speed which the coach walked during any of the time intervals for the last 16.0 seconds?
f. What was the average speed of the coach for these 16.0 seconds?
Audio Guided Solution
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b. 0 m
c. 6 m
d. 4-6 seconds and again at 14 seconds
e. 4 m/s
f. 1.5 m/s
Habits of an Effective Problem Solver
- Read the problem carefully and develop a mental picture of the physical situation. If necessary, sketch a simple diagram of the physical situation to help you visualize it.
- Identify the known and unknown quantities in an organized manner. Equate given values to the symbols used to represent the corresponding quantity - e.g., vo = 0 m/s; a = 4.2 m/s/s; vf = 22.9 m/s; d = ???.
- Use physics formulas and conceptual reasoning to plot a strategy for solving for the unknown quantity.
- Identify the appropriate formula(s) to use.
- Perform substitutions and algebraic manipulations in order to solve for the unknown quantity.
Read About It!
Get more information on the topic of Kinematics at The Physics Classroom Tutorial.
- Distance and Displacement
- Speed and Velocity
- Meaning of Slope on a Position-Time Graph
- Calculating the Slope of a Position-Time Graph
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