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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?
I. Work Worksheet: Work & Power Problems Answer Key. A. Sample Problems: 1. F = 200 Newtons Formula: W = Fd d = 50 meters Substitution: W = (200 N)(50 m) W = ? Answer with unit of measure: W = 10,000 J. 2. F = 5 Newtons W = 75 Joules Formula: d = ? Substitution: d = W/F. Answer with unit of d = 75 J/5 N measure: d = 15 m. 3.
High School Physics Worksheets and Answer Keys, Study Guides and Vocabulary Sets. PHYSICS is the study of matter, energy, and the interaction between them. Physics tries to answer main questions which include how did the universe begin?
Version 2 is now LIVE! We have more than tripled the number of problems, broken each unit into several smaller, single-topic problem sets, and utilized a random number generator to provide numerical information for each problem. Student answers are automatically evaluated and feedback is instant.
We have 20 ready-to-use problem sets on the topic of Work, Energy, and Power. These problem sets focus on the use of energy principles to mathematically analyze systems involving the motion of objects. Click a link to open a publicly-available problem set.
If a small machine does 2,500 joules of work on an object to move it a distance of 100 meters in 10 seconds, what is the force needed to do the work? What is the power of the machine doing the work?
Solution: This is a projectile motion problem with launch angle α = 0 , so the projectile equations which are the x and y components of velocity and displacement vectors are written as below. = v0xt = v0 cos αt. = − gt2 + v0sin αt + y0. z. v0y. vx = v0 cos α. vy = v0 sin α −gt. z.
