Energy Calculations Worksheet

Name ______Period ______

1. A shot putter heaves a 7.26kg shot with a final velocity of 7.5m/s. What is the kinetic energy of the shot?

Known Equation Solution

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2. A 2kg textbook is lifted from the floor to a shelf 2.10m above the floor. (a) What is the gravitational potential energy of the book relative to the floor? Known Equation Solution

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(b) What is its gravitational potential energy relative to the head of a 1.65m tall person? Known Equation Solution

Unknown Fill in 3. Missy Diwater, the former platform diver for the Ringling Brother's Circus, had a kinetic energy of 12 000 J just prior to hitting the bucket of water. If Missy's mass is 40 kg, then what is her speed? Known Equation Solution

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4. A 98N sack of grain is hoisted to a storage room 50m above the ground floor of a grain elevator. What is the potential energy of the sack of grain at this height? Known Equation Solution

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Define the following: Kinetic Energy

Mechanical Energy

Elastic Potential Energy

Chemical Potential Energy

Law of Conservation of Energy

What are the 3 things you need to remember when solving a conservation of energy calculation?