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Use the work-energy theorem to calculate a force, a displacement, or a speed for an object moving across a horizontal surface. Includes 9 problems.
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Free science and math simulations for teaching STEM topics, including physics, chemistry, biology, and math, from University of Colorado Boulder.
Work Practice Problems Worksheet #1 ANSWER KEY. 1) Amy uses 20N of force to push a lawn mower 10 meters. How much work does she do? Work = Force X Distance Work = 20N X 10m Work = 200 J. 2) How much work does an elephant do while moving a circus wagon 20 meters with a pulling force of 200N?
Worksheet - Work & Power Problems I. Work A. Sample Problems: 1. F = 200 Newtons Formula: _____ d = 50 meters Substitution: _____ W = ? Answer with unit of measure: _____ 2. F = 5 Newtons Formula: _____
Review the units of work, energy, force, and distance. Use the equations for mechanical energy and work to show what is work and what is not. Make it clear why holding something off the ground or carrying something over a level surface is not work in the scientific sense.
what is the force needed to do the work? What is the power of the machine doing the work? 14. A machine uses a force of 200 newtons to do 20,000 joules of work in 20 seconds. Find the distance the object moved and the power of the machine. (Hint: A joule is the same as a Newton-meter.) 15.
