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Solving Energy problems 2

Solving Energy problems 2. Solving Energy problems. The 0.1-kg baseball has been badly hit and it fly's straight up. At the top of its arc it has 29.4-joules of gravitational potential energy. How high did it go?. Solving Energy problems.

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Solving Energy problems 2

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  1. Solving Energy problems 2

  2. Solving Energy problems • The 0.1-kg baseball has been badly hit and it fly's straight up. At the top of its arc it has 29.4-joules of gravitational potential energy. How high did it go?

  3. Solving Energy problems • The 0.1-kg baseball has been badly hit and it fly's straight up. At the top of its arc it has 29.4-joules of gravitational potential energy. How high did it go? • Step 1 – Read the problem look for what is given.

  4. Solving Energy problems • The 0.1-kg baseball has been badly hit and it fly's straight up. At the top of its arc it has 29.4-joules of gravitational potential energy. How high did it go? • Step 1 – Read the problem look for what is given. Mass (m)= 0.1 kg Gravitational Potential Energy (ke) = 29.4 J

  5. Solving Energy problems • The 0.1-kg baseball has been badly hit and it fly's straight up. At the top of its arc it has 29.4-joules of gravitational potential energy. How high did it go? • Step 2 – Read the problem look for key words.

  6. Solving Energy problems • The 0.1-kg baseball has been badly hit and it fly's straight up. At the top of its arc it has 29.4-joules of gravitational potential energy. How high did it go? • Step 2 – Read the problem look for key words. 1st key words (gravitational potential energy) Use the gravitational potential energy formula Gpe = m * 9.8m/s2 * h

  7. Solving Energy problems • The 0.1-kg baseball has been badly hit and it fly's straight up. At the top of its arc it has 29.4-joules of gravitational potential energy. How high did it go? • Step 2 – Read the problem look for key words. 1st key words (gravitational potential energy) Use the gravitational potential energy formula Gpe = m * 9.8m/s2 * h 2nd key words (How high) What you are looking for is the height h

  8. Solving Energy problems • The 0.1-kg baseball has been badly hit and it fly's straight up. At the top of its arc it has 29.4-joules of gravitational potential energy. How high did it go? Gpe = m * 9.8m/s2 * h • As you are looking for h you must first rearrange the equation to get everything on the other side of the = sign from h. To do this you must divide both sides of the equation by m * 9.8m/s2.

  9. Solving Energy problems • The 0.1-kg baseball has been badly hit and it fly's straight up. At the top of its arc it has 29.4-joules of gravitational potential energy. How high did it go? Gpe = m * 9.8m/s2 * h Gpe = m * 9.8m/s2 * h m * 9.8m/s2 m * 9.8m/s2 The m * 9.8m/s2 ’s on the right side of the equations cancel and you end up with

  10. Solving Energy problems • The 0.1-kg baseball has been badly hit and it fly's straight up. At the top of its arc it has 29.4-joules of gravitational potential energy. How high did it go? Gpe = m * 9.8m/s2 * h Gpe = h m * 9.8m/s2

  11. Solving Energy problems • The 0.1-kg baseball has been badly hit and it fly's straight up. At the top of its arc it has 29.4-joules of gravitational potential energy. How high did it go? Gpe/ m * 9.8m/s2 = h Now fill in the values from the problem and solve (29.4 J/ 0.1kg * 9.8m/s2 )= h (294 m2/s2/ 9.8m/s2 )= h 30 m= h

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