Calculate the force applied and constant frictional force opposing its motion

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SUMMARY

The discussion centers on calculating the force applied to a 0.50 kg skateboard and the constant frictional force opposing its motion. The skateboard travels 1.0 m in 8.5 seconds, after which it coasts an additional 1.25 m before stopping. Using Newton's second law, F(net) = m*a, participants explore how to determine acceleration despite the skateboard starting and ending at rest. Key equations include kinematic equations for motion under constant acceleration.

PREREQUISITES
  • Understanding of Newton's second law (F = m*a)
  • Familiarity with kinematic equations for uniformly accelerated motion
  • Basic knowledge of frictional forces and their calculation
  • Ability to perform calculations involving mass, distance, time, and acceleration
NEXT STEPS
  • Study kinematic equations to calculate acceleration and final velocity
  • Learn how to calculate frictional force using F_friction = μ * N
  • Explore examples of motion analysis involving forces and friction
  • Investigate the relationship between force, mass, and acceleration in practical scenarios
USEFUL FOR

Physics students, educators, and anyone interested in understanding the dynamics of motion and force calculations in real-world applications.

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A 0.50kg skateboard is at rest on a rough, level floor on which two lines have been drawn 1.0m apart. A constant horizontal force is applied to the shateboard at the beginning of the interval, and is removed at the end. The skateboard takes 8.5s to travel the 1.0m distance, and it then coasts for another 1.25m before coming to rest. calculate the force applied to the skateboard, and also the constant frictional force opposing its motion.
 
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What equations come into play here and what is your attempt at a solution?
 
Well I was thinking of the the Newton's second law, which is F(net)=m*a. Then I need acceleration. Which is confusing because both the velocities are at rest since it starts from a rest and ends at a rest. So I really don't know what to do!
 

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