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Guiding Questions

What is kinetic energy, and what does it do?
What are two things that kinetic energy depends on? Why?
How do you calculate kinetic energy?
How much work does it take to stop an object with a lot of kinetic energy?
When is kinetic energy the greatest in a ball you throw in the air?
What is a pendulum? What are its parts?
What is the difference between period and amplitude?
When is kinetic energy the greatest and when the least for the motion of a pendulum?

Answer each question in order, I want you to answer in very short sentences, I want you to make it seem like an 8th grader wrote this, and I want you to make It understandable, casual, and simple

1 answer

  1. Kinetic energy is the energy of motion. It makes things move faster.

  2. Kinetic energy depends on mass and speed. More mass or faster speed means more energy.

  3. You calculate kinetic energy using the formula: KE = 1/2 mv², where m is mass and v is speed.

  4. To stop an object with a lot of kinetic energy, you need to do the same amount of work as its energy. So, if it has a lot of energy, it takes a lot of work.

  5. Kinetic energy is greatest when the ball is thrown at its highest speed, right before it starts to come down.

  6. A pendulum is a weight (like a ball) hanging from a fixed point that swings back and forth. Its main parts are the rod, the weight, and the pivot point.

  7. The period is how long it takes to complete one swing. Amplitude is how far the pendulum swings from the center.

  8. Kinetic energy is greatest when the pendulum is at its lowest point, swinging fastest, and least at the highest points, where it stops before going back.