Question

Explain why a thrown football has both potential and kinetic energy. What is the combined energy called?

Answer 1

The total of the Kinetic and potential energy is probably called, total energy, or Mechanical energy.

Answer 2

The kinetic energy is from the force on the ball that accelerates it, the person throwing it.

Answer 3

The person does work on the ball

Answer 4

Okay thanks. Can you check the message I sent you perhaps, I kind of came up with an answer and wanted you to see if it is good or not.

Answer 5

Throwing a ball into the air represents a situation in which the total energy is fixed and there is a continuous transformation from kinetic energy to potential energy.

When the ball is on the ground there and not moving there is no potential energy or kinetic energy
When the the ball is tossed into the air it will reach a maximum height which is determined by how much kinetic energy it has
When the ball reaches its maximum height its velocity is 0 and all of the energy in the system is potential energy
As the ball falls to the ground that potential energy is converted to kinetic energy

Answer 6

Watch this
https://www.youtube.com/watch?v=54VrCrWqaPU

Answer 7

Yay, Okay, that helps thanks! ^~^

Answer 8

Work-Energy Theorem / Conservation of mechanical energy

Answer 9

That whole lecture series is good, it will help out out for class

Answer 10

Okay. I'll be sure to check them out. Thank you. c:

Answer 11

Here is the index

Answer 12

Thank you!! ^o^

Answer 13

Welcome. Those will get you an A in the class if you watch them. lol.. worked for me.

Answer 14

Haha okay. I hope they work. c:

Answer 15

Did you check the message i sent you??

Answer 16

Looks good, except the potential energy is there because it is above the ground yes, but why? The throw did work on the ball and changed its momentum and kinetic energy, as the ball moves further in the gravitational field, the kinetic energy is converted into stored potential energy the higher the ball becomes relative to zero PE

Answer 17

Okay. Thank you, I'll revise my answer and then submit it now. :)

Answer 18

k, watch that linked video, from like 3:40 to 8 min... it is an example of deriving how high a projectile will go in a gravitational field using energy considerations.

Answer 19

Okay, I will!

Answer 20

:D