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## How do you calculate mechanical energy?

Mechanical energy is due to the position or movement of an object. The formula for mechanical energy is mechanical energy = kinetic energy + potential energy.

## What is the potential energy of a 3kg ball that is on the ground?

— With respect to the ground, the ball has zero potential energy.

## How do I calculate potential energy?

The formula for potential energy depends on the force acting on the two objects. For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.

## What potential energy is acquired by a hammer with a mass of 0.75 kg when raised 0.35 m?

Therefore, the potential energy acquired by the hammer is 2.57 J.

## At what height is an object that has a mass of 16 kg is its gravitational potential energy is 7500 J?

We need to find the height of the object. The formula for the gravitational potential energy is given by : So, the required height is equal to 46.87 m.

## What is the kinetic energy of a 3 kg ball that is rolling at 2 m s?

PE= Fwh = (72 m) (966 N) = 69552 Joules 7. What is the kinetic energy of a 3-kilogram ball that is rolling at 2 meters per second? KE= ½ m v2 = ½ (3kg) (2 m/s)2 = 6 Joules 8.

## What is the potential energy of your 3 kg puppy?

1 Answer. Equal to its weight. That is 3kg x 9.8 ms^-2 = (approx.) 30 N.

## What is the potential energy of a 2kg plant that is on a windowsill 1.3 m high?

Answer. Answer: Potential Energy=mgh=2×9.8×1.3=25.48.

## What is the kinetic energy of a 2 000 kg boat moving at 5.0 m s?

Kinetic energy = mv^2/2 = 2000×5^2 /2 = 25000J or 25KJ.

## What has more energy a 20 kg mass moving at 9 m/s or a 4 kg mass 25m above the floor?

15. What has more energy, a 20 kg mass moving at 9 m/s, or a 4 kg mass 25 m above the floor? HE GPE = mgh Joules 19.

## Which object has more potential energy when it was lifted to a distance of 10 meters?

The 4 kg object had more potential energy when it was lifted 10 m. GPE = mgh. A greater mass would make a greater GPE.

16875 Joules

## What is the kinetic energy of a 1200 kg object that is moving at a speed of 24 m s?

KINETIC ENERGY=345600Joules.

8 kg

## What is the kinetic energy of a jogger with a mass of 65.0 kg?

Answer: Kinetic energy=1/2mv^2. 1/2×65×2.5^2.

## When you stretch a rubber band you are storing?

You input potential (stored) energy into the rubber band system when you stretched the rubber band back. Because it is an elastic system, this kind of potential energy is specifically called elastic potential energy.

## Does the width of a rubber band affect how easily it can be stretched?

Explanation: Width of rubber band affect how easily it can be stretched. On the other hand when the rubber band is wider it means more molecules are there along its width and hence more restoring force will be there while stretching so it will be difficult to stretch a wider rubber band.

## What happened to the box and to the house when you stretch the rubber band?

Answer: the box will move with the rubber band when you keep pulling it.

## How does energy become stored in a fossil fuel what kind of energy is stored?

The energy in fossil fuels (coal, oil, gas) is Chemical Potential Energy. Fossil fuels come from decayed living matter that has stored energy in its chemical bonds (bonds of atoms and molecules). Coal, petroleum, natural gas, and propane are examples of fossil fuels that store chemical energy.

## When energy is stored What is it called?

Potential energy is stored energy and the energy of position. Chemical energy is energy stored in the bonds of atoms and molecules.

## What is the original source of energy for all fossil fuels?

All the energy in oil, gas, and coal originally came from the sun, captured through photosynthesis. In the same way that we burn wood to release energy that trees capture from the sun, we burn fossil fuels to release the energy that ancient plants captured from the sun.

## What is the most efficient source of energy?

Although there are many types of energy, the most efficient forms are renewable: hydro-thermal, tidal, wind, and solar. Solar energy has been proven to be the most efficient and effective among renewable energy sources for home and commercial use.

## What is the best alternative source of energy?

5 Best Alternative Energy Sources

• Solar Energy.
• Wind Power.
• Hydropower.
• Geothermal Power.
• Biomass Power.

## What is the cheapest renewable energy?

Hydroelectric power

## What is the cleanest energy source?

Out of all energy resources, we consider green power (solar, wind, biomass and geothermal) as the cleanest form of energy. So, if we were looking at clean energy on a spectrum, these would be farthest from “dirty” or emissions-heavy energy.

16875J

## Is Ke to PE?

Now we can say that PE1=KE2. The energy has literally been converted from potential energy to kinetic energy. Note that the total energy at point 1 is equal to the energy at point 2, the energy has changed forms, but was not created or destroyed.

## What term is used for energy transfer?

Transferring energy mechanical work – a force moving an object through a distance. electrical work – charges moving due to a potential difference. heating – due to temperature difference caused electrically or by chemical reaction.

## Is a measure of the ability to do work?

Energy is a measurement of the ability of something to do work.