Mechanics: 1-Dimensional Kinematics
1-D Kinematics: Audio Guided Solution
Problem 19:
Cynthia
competes in luge competitions during the winter months. She
rides
solo on a small sled 3 inches off the ground down icy slopes, turning
only by use of her feet and the shifting of her weight on the sled.
During the initial stage of one downhill luge, Cynthia accelerated from
rest at 6.84 m/s/s for 2.39 seconds. Determine the distance
she
moved during this acceleration phase.
- 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.
Get more information on the topic of Kinematics at The Physics Classroom Tutorial.
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