Copley-Fairlawn City Schools / Overview



NAME ________________________________________________________ DATE ______________________Chapter 13: Work and Energy – Study GuideFor each item below, list the definition, equation needed to solve, and the SI unit.DefinitionEquationSI unitPower (P)W = _____________ t = _______________P = ________________Work (W)W = _____________ F = _______________d = ________________Gravitational Potential Energy (GPE)Depends on the ______________ and _______________ of an objectm = ____________ h = _______________g = ______________Kinetic Energy (KE)m = ____________ v __________________ At the top of its arc, a thrown ball has ____________ potential energy.a) maximumc) zero b) minimumd) averageAs a dropped penny falls toward the ground, _____________ energy is converted to ___________ energy.a) thermal, potentialc) kinetic, heatb) kinetic, vibrationald) potential, kineticMechanical energy can change to nonmechanical energy as a result ofa) air resistance.c) radiation.b) heat.d) None of the aboveA quantity that measures the effects of a force acting over a distance is called ________________.Which of the following is an example of mechanical energy?a) nuclear energyc) chemical energyb) potential energyd) light energyThe primary source of the sun’s energy is ________________________ _______________________.Potential energy is sometimes called ___________________ of _______________________.The two main types of energy are ______________________ and ________________________. Identify and define the other forms of energy from your notes.State the law of conservation of energy and give an example of it. Do not use your rolling object lab as an example.Only a portion of the work done by any machine is?_______________________work. Explain what this means – What is efficiency?If the temperature increases, ___________________________ energy will also increase.-142875707707500A 50 N girl climbs the flight of stairs in 3 seconds. Calculate work and power.The girl lifts a painting to a height of 0.5 m in 0.75 seconds. Calculate work and power.The girl climbs the ladder with the painting in 5 seconds. Calculate work and power.A boy exerts an average force of 65 N when he lifts a box 1.2 meters. How much work does he do?Calculate the gravitational potential energy of an 82 kg student that Ms. Lopez lifts 2.0 m above the ground. Imagine a bouncing ball that does not lose any energy as it bounces. Could it ever bounce to a greater height than it was dropped from? Explain your answer.A dropped racquetball will not return to its original position because some of the [mechanical / nonmechanical] energy is converted to [mechanical / nonmechanical] energy. Choose the sequence of energy forms that best fits each item._______ Hairdryer _______ Electric saw _______ Toaster a. chemical energy electrical energy mechanical energy_______ Shredder b. electrical energy thermal energy_______ Coffee Potc. electrical energy mechanical energy_______ Windmilld. mechanical energy electrical energy_______ iPode. electrical thermal & radiant energy_______ Speaker Vibrates2961640644842500Complete the concept map by writing the correct word or phrase in the lettered box._____________________________________________________________________________________________________________________________________________________________________An object has a mechanical energy of 1575 J and a potential energy of 1265 J.What is the kinetic energy of the object? If the mass of the object is 12 kg, what is its speed?How high above ground is the object? A 59 kg man has a total mechanical energy of 150,023 J. If he is swinging downward and is currently 2.6 m above the ground, what is his speed? Calculate the kinetic energy of a 750 kg compact car moving at 50 m/s. Determine the mechanical energy of a 450 kg roller coaster moving at 30 m/s at the bottom of the first dip which is 15 meters above the ground.26765257867650 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download