It changes more from 20 km/h to 30km/h.
-Answer from Penn State University Physics 001 Homework
A quantity with a negative rate of change becomes smaller as time goes on. A quantity with a positive rate of change becomes larger as time goes on.
Price goes from 12 to 9 means the change is -3 -3 as a percentage of 12 is 100*(-3)/12 = -25 %
It goes 26/2 = 13 times
Wind speed effects how much energy a windmill produces. The faster the windmill goes, the more energy it produces.
16 goes into 145 9 times without going over
potential energy that converts to kinetic energy
the skateboards potential energy becomes kinetic energy and heat energy.
It is kinetic. Someone/something going from its gravitational (not moving) energy to then moving, creates kinetic energy, because it goes from stationary to moving. GRAVITATIONAL ------> KINETIC
Kinetic
No, kinetic energy and chemical energy are two different forms of energy. Kinetic energy is the energy of motion, while chemical energy is the potential energy stored in the bonds of atoms and molecules.
Usually in the form of increased or decreased kinetic energy of the molecules and added or reduced inter-molecular potential energy. Which way it goes depends on the direction of change in state.
The skier going up the hill gains potential energy due to its height increase, which is stored energy that can be released when the skier goes back down the hill. As the skier goes down the hill, the potential energy is converted into kinetic energy, which is the energy of motion.
At the top of the first hill, the coaster car has stored the maximum amount of potential energy. This is shown in the equation for potential energy, PE=mgh, where h is the height. The greater the height, the greater the potential energy. During the drop, potential energy is being converted into kinetic energy. The equation for kinetic energy is KE=(1/2)mv^2, where v is the velocity of the coaster car. The faster the car is going, the greater the kinetic energy. So as the car goes faster, the kinetic energy grows. But as the car goes down, h is getting lower, lowering the potential energy.
Kinetic energy of a substance is the energy of motion of its particles. Temperature is a measure of this quality. When you increase the kinetic energy of a substance, you increase the motion and collisions between its particles, and its temperature goes up.
never ? really the answer is that kinetic energy is changer to potential energy then when the laws of gravity and inertia come into play it is converted back into kinetic energy
Pressurised air is a form of kinetic energy.
uh, down? (yes, down) The potential energy, as in a compressed spring, goes to zero as the spring is released. The potential energy (sort of) becomes the kinetic energy. (Now, I'm sure that that statement could get an argument in the physics study room in the science building, but it'll get you by...)