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PF1.5: WORK, ENERGY AND POWER. Energy exists in many different forms, eg, kinetic energy Ek, potential energy Ug, electrical energy, and elastic (or spring) energy Es. A fundamental principle of nature is that energy cannot be created or destroyed, only transformed or transferred.
AP Physics 1- Work, Energy, & Power Practice Problems ANSWERS FACT: The amount of work done by a steady force is the amount of force multiplied by the distance an object moves parallel to that force: W = F x cos (θ). The units are N. m, which equal a Joule (J). Positive work is done by a force parallel to an object’s displacement.
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: _____
(a) How much work is done in 25 s? (b) What power is being used? (c) What force of friction is acting on the object? 23. How much electrical energy (in kilowatt-hours) would a 60.0 W light bulb use in 60.0 days if left on steadily? 24. A power mower does 9.00 x 105 J of work in 0.500 h. What power does it develop? 25. How long would it take a 500.
2 Worksheet: Work, energy and power. QUESTION 1. 1.1 A girl with mass 60 kg slides 3 m down an inclined plane as shown in the picture. Calculate the work done on the girl by gravity. Calculate the work done on the girl by the normal force. 1.2 A block (5 kg) is pulled by a force of 60 N at an angle of 30 to the ground. The block moves 3,25 m.
The Basics of Work, Energy, and Power. Objectives: To describe the conditions under which positive and negative work are done and to use the work equation to calculate the amount of work done.
Teacher Toolkit - The Basics of Work, Energy, and Power Objectives: 1. To describe the conditions under which positive and negative work are done and to use the work equation to calculate the amount of work done. 2. To define potential energy, to identify the two forms and the variables that affect the amount of each form, and
