Zero.
You need to think in terms of "frame of reference" as in what are you comparing the rock to. If you are an observer sitting next to the rock then the kinetic energy of the rock RELATIVE TO YOU is zero - I.E. the rock isn't moving relative to you and thus has no kinetic energy - energy of motion - relative to you.
If you are an observer sitting a million miles from earth watching the rock then it is zipping around at 1000 miles per hour as the earth spins on its axis and it has significant kinetic energy RELATIVE TO YOU. You need to think in terms of "frame of reference" as in what are you comparing the rock to. If you are an observer sitting next to the rock then the kinetic energy of the rock RELATIVE TO YOU is zero - i.e. the rock isn't moving relative to you and thus has no kinetic energy - energy of motion - relative to you.
If you are an observer sitting a million miles from earth watching the rock then it is zipping around at 1000 miles per hour as the earth spins on its axis and it has significant kinetic energy RELATIVE TO YOU. ---- So we don't get bored, no kinetic and no gravitational potential energy.
The type of energy of a boulder sitting on a cliff is potential energy. Potential energy is possible energy as opposed to actual energy. If it were to start rolling down the hill, the energy would change to kinetic energy.
its physics term for the fact that it is not in motion (kinetic energy) but it is above the ground, so at any moment it could "potentially" have kinetic energy by falling to the floor.
The small cat running down the street would have more kinetic energy because it is in motion, whereas the large dog sitting on the sidewalk is stationary and has no kinetic energy.
As a falling object descends, its potential energy (due to its position above the ground) is converted into kinetic energy (energy of motion). This kinetic energy increases as the object accelerates towards the ground. When the object reaches the ground, all of its potential energy is converted into kinetic energy.
When a book falls off a shelf and hits the ground, its potential energy is converted to kinetic energy as it falls. When it hits the ground, some of the kinetic energy is converted into sound and heat energy due to the impact.
The type of energy of a boulder sitting on a cliff is potential energy. Potential energy is possible energy as opposed to actual energy. If it were to start rolling down the hill, the energy would change to kinetic energy.
its physics term for the fact that it is not in motion (kinetic energy) but it is above the ground, so at any moment it could "potentially" have kinetic energy by falling to the floor.
The small cat running down the street would have more kinetic energy because it is in motion, whereas the large dog sitting on the sidewalk is stationary and has no kinetic energy.
As a falling object descends, its potential energy (due to its position above the ground) is converted into kinetic energy (energy of motion). This kinetic energy increases as the object accelerates towards the ground. When the object reaches the ground, all of its potential energy is converted into kinetic energy.
When a book falls off a shelf and hits the ground, its potential energy is converted to kinetic energy as it falls. When it hits the ground, some of the kinetic energy is converted into sound and heat energy due to the impact.
The kinetic energy would be the energy of a piece of snow hurtling through the air. The potential energy would be calculated based on how far the piece of snow has to go to reach the ground.
No, the energy of a frog sitting on a lily pad would be potential energy, as it is not currently in motion but has the potential to move due to its position above the water.
If a picture is hanging on a wall and is at rest, it does not possess kinetic energy. Kinetic energy is the energy an object has due to its motion, so in this case, the picture would have potential energy due to its position above the ground.
The potential energy of the apple while hanging is given by mgh, where m=0.95 kg, g=9.8 m/s^2, and h=3 m. At the moment it reaches the ground, all this potential energy will have converted to kinetic energy, thus the kinetic energy would be equal to the initial potential energy. Calculating mgh gives a potential energy of 27.93 J, which would be the kinetic energy just before hitting the ground.
As the stone falls off the tabletop, its potential energy decreases while its kinetic energy increases. At the moment it leaves the tabletop, it has maximum potential energy and zero kinetic energy. As it falls, its potential energy is converted into kinetic energy until it reaches the ground and all potential energy is transformed into kinetic energy.
If it were released from the top of the ramp, the cart would have maximum kinetic energy at the bottom of the ramp since the gravitational energy at the top of the ramp is converted into the kinetic energy of the cart.
There would be more gravitational potential energy than kinetic energy when an object is at a high elevation or position above the ground, where the gravitational potential energy is proportional to the height of the object. As the object falls, the potential energy is converted to kinetic energy, so at any point during the fall, the sum of potential and kinetic energy remains constant.