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The car has 1000 kg mass and it was going 20 ms before it stopped at the stop sign what is its potential energy?
Wiki User
∙ 14y ago
Before the driver hit the brakes, the car's kinetic energy was (1/2 m V2) = (500) (20)2 = 200,000 joules.
After it stops at the stop sign, its kinetic energy and potential energy are both zero. The brakes
turned that whole 200,000 joules into heat, and the wind blew it away.
Unless . . .
Unless the car is an electric or a hybrid. What they do is to take that kinetic energy and put
a lot of it back into the battery, so you can use it again, and you don't completely lose it all.
That's what's the big deal about electric and hybrid cars.
Wiki User
∙ 14y ago
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When does a skydiver have the gratest potential energy?
I'm guessing when their at the top of a mountain when their about to start going down, sorry i couldn't give you a better answer.
How do gravity and potential energy work together to give you a great ride on a roller coaster?
the gravitational potential energy of a roller coaster is equal to two things. Not only is it equal to the gravitational potential energy, it is also equal to the kinetic energy at the lowest point of the coaster. the gravitational potential energy can be calculated as: m*g*h where m is mass (kilograms), g is gravity (9.8 m/s^2), and h is height (metres).d the kinetic energy at the bottom of the coaster can be calculated as (m*v^2)/2 where m is mass (kilograms), v is velocity (metres/second).
What has the least potential energy a ball on top of a slide a ball going down a slide or a ball on top of a 3 story building?
going down a slide
How does kinetic energy become potential energy?
Here are some examples of how kinetic energy becomes potential energy: -when a rollercoaster car is at the bottom of a hill and going back up the next hill. -when a ball hits the floor and bounces back up. -climbing up a rock wall. Hope this was helpful!
Is potential energy slower than kinetic energy?
Potential energy is unreleased energy - an unmoving rock at the top of a cliff, or a stick of dynamite. Potential energy becomes kinetic energy when it is released - the rock is falling from the cliff, or the stick of dynamite is exploding. So technically the answer is yes. Kinetic even means "motion"! But be careful about saying that potential energy is "slower" than kinetic, or in trying to distinguish between the two based on how fast you perceive an object to move. Kinetic energy doesn't necessarily make an object "look" as if it is moving faster. For example, heating water in a microwave converts potential energy (a difference in voltage between the two prongs of the microwave plug) into kinetic energy (an increase in the temperature of the water), but the water doesn't "look" as if it is going "faster" until it actually boils - the actual change in velocity is at the molecular level of the water.
How does potential energy and kinetic energy transfer as a roller coaster moves?
when it is high and stopped its potential when its going down is the kinetic
How kinetic energy and potential energy vary?
Well, the most potential energy is when your going slow or your stopped. The most kinetic energy is like at the bottom of a hill over the first hump in a rollarcoaster, when your going your fastest. Your speed and probably friction will affect it.
What is the potential energy increased by going up hill?
gravitational potential energy
When would a person going down a hill have the most potential energy?
He would have most potential energy when he hasn't started going down yet, since the higher he is, the greater his potential energy. Potential Energy= mass*gravity*height(from ground)
When does a skydiver have the gratest potential energy?
I'm guessing when their at the top of a mountain when their about to start going down, sorry i couldn't give you a better answer.
What is the potential energy of a 5 kg object sitting on a shelf 3 m high?
PE = m x 9.8 x h:So, 5kg x 9.8 x 5m = 245 joules potential energy.
How does the energy associated with a bicycle change as it speeds up going downhill?
The energy associated with a bicycle changes as it speeds up going downhill due to the fact that potential energy is converted to kinetic energy. The potential energy is the energy of the position. The kinetic energy is the energy of movement.
A bullet traveling upwards has what type of energy?
it has both potential and kinetic energies as when it is going upwards, the potential energy increases while the kinetic energy decreases until it reaches the top, and then the kinetic energy is zero and the potential energy is maximum.
What are the conversions between potential and kinetic energy that occurs when you shoot a basketball at a basket?
Seriously -.-' First of all When You throw The Basketball it is going up^ Which is Kinetic energy when is comes down and STOPS it is Potential energy. Oh And this question is in the 6th grade science textbook! The orange textbook....so yeah. BYe
Which car has the most potential energy going down a hill?
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What energy is in a roller coaster?
Potential energy is used when going up hill on a roller coaster. When it starts gong down the potential energy is converted to kinetic energy.
What are the effects of potential energy and kinetic energy to 3 states of matter?
Kinetic energy effects changes of state because it is when energy that has been held up inside the object (aka potential energy), is finally released. For example: On a roller coaster, the cart goes up a hill. At the top of the hill, right before it is about to go down another hill, it has potential energy, or stored up energy. Then whe it is going down the hill, all the energy is released and now the energy is in the form of kinetic. Another example: A marble is attached onto the end of a string. You pull the marble back. While being held back, the marble has potential energy. When you let the marble go, that energy turns into potential energy, because it is in motion. Defintions: Potential energy: Energy that is stored up Kinetic energy: Energy in motion
