Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
Approximately 11.67 meters
B
Approximately 5.00 meters
C
Approximately 15.00 meters
D
Approximately 20.00 meters
Understanding the Answer
Let's break down why this is correct
Answer
The skateboarder has kinetic energy that is lost to friction, so the friction force \(f=\mu_k N\) is \(0. 3\times70\times9. 8\approx206\text{ N}\). That force gives a deceleration \(a=f/m=206/70\approx2. 94\text{ m/s}^2\).
Detailed Explanation
The friction force pulls back on the skateboarder and slows him at a constant rate of a = μg. Other options are incorrect because This option assumes the skateboard stops very quickly, as if friction were much larger; This answer treats friction as weaker than it really is.
Key Concepts
Energy Dissipation
Types of Friction
Coefficient of Friction
Topic
Friction
Difficulty
hard level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1A skateboarder is moving down a ramp and reaches the bottom with a specific velocity. Assuming negligible friction and air resistance, which principle would best describe the skateboarder's motion as they transition from potential energy at the top of the ramp to kinetic energy at the bottom?
mediumPhysics
Practice
2
Question 2A skateboarder is moving down a ramp and reaches the bottom with a specific velocity. Assuming negligible friction and air resistance, which principle would best describe the skateboarder's motion as they transition from potential energy at the top of the ramp to kinetic energy at the bottom?
mediumPhysics
Practice
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