How Do You Calculate Hickey's Mass from His Skateboarding Speed Change?

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SUMMARY

The discussion focuses on calculating Hickey's mass based on his change in skateboarding speed from 25 m/s to 35 m/s, with a net work of 21,000 Joules. The relevant equations include the work-energy principle, which states that work done is equal to the change in kinetic energy. The kinetic energy formula, KE = 0.5 * m * v^2, is essential for solving for mass (m). The problem is solvable by using the work-energy principle to find the distance and subsequently the mass.

PREREQUISITES
  • Understanding of kinetic energy (KE = 0.5 * m * v^2)
  • Familiarity with the work-energy principle
  • Basic algebra for solving equations
  • Knowledge of units of work (Joules) and speed (m/s)
NEXT STEPS
  • Study the work-energy theorem in physics
  • Learn how to derive mass from kinetic energy changes
  • Explore problems involving net work and energy transformations
  • Investigate the relationship between force, distance, and work
USEFUL FOR

Students in physics, educators teaching mechanics, and anyone interested in applying the work-energy principle to real-world scenarios.

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Homework Statement




Hickey reached a speed of 35 m/s on his skateboard . Suppose it took 21,000 Joules of net work for Hickey to reach this speed from a speed of 25 m/s. Find Hickey's mass

Homework Equations



Work = Force x Distance Cos(theta)

The Attempt at a Solution


From my believe, the velocity initial is 25 m/s and the final velocity is 35 only m/s. The missing variable is the distance to solve the equation. Is it even possible to find the distance given velocity? Is the problem corrupt?
 
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Work done is equal to change in kinetic energy. Work done is given. Use kinetic energy formula and find M.
 

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