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Kinetic Mechanical Energy

Kinetic Mechanical Energy. Recall that energy means “the ability to do work.”. Any object that is moving contains some kinetic energy. The amount of kinetic energy an object contains depends on: 1. 2. mass. velocity. Eureka!. where, E K = kinetic energy, (J) m = mass, (kg)

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Kinetic Mechanical Energy

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  1. Kinetic Mechanical Energy • Recall that energy means “the ability to do work.” • Any object that is moving contains some kinetic energy. • The amount of kinetic energy an object contains depends • on: • 1. • 2. mass velocity Eureka!

  2. where, EK = kinetic energy, (J) m = mass, (kg) v = velocity, (m/s)

  3. Example #1 How fast would a 6.0 kg curling stone be travelling if it contained 48 J of kinetic energy?

  4. where, Eg = gravitational potential energy, (J) m = mass, (kg) g = 9.81 N/kg h = height, (m) Gravitational Potential Energy • Gravitational Potential Energy depends on the height an • object is raised above the ground, as well as its mass. Example #2 Find the work done in lifting a 75 kg rock 4.0 m above the ground.

  5. Example #3 If an 150 kg mountain lion has 2400 J of energy, how high above the ground is it? Eureka!

  6. Homework: pg. 136 #1-9

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