Using conservation of energy means that potential energy is being converted into kinetic enegy and you can set the two equations equal.
PE = gmh and KE = 1/2mV2 become
gmh = 1/2mV2
mass can be algebraically eliminated
gh = 1/2V2
(9.8 m/s2)(12 m) = 1/2V2
117.6 = 1/2V2
multiply through by 2
235.2 = v2
take square root both sides
15 meters per second = velocity
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A dropped ball doesn't bounce back to its starting height how does this situation fit the law of conversation of energy?
According to the scientific law of conservation of energy the energy can be sustained by the bouncy ball indefinitely
What is the gravitational potential energy to a car that is 1500kg and is dropped from 50 meters?
After the car is dropped, it has NO gravitational potential energy.Before it's dropped, you can calculate the potential energy as mgh (mass x gravity x height). You can use 9.8 for gravity.
Is there a link between the height the ball is dropped from and the height to which it bounces?
Yes. Under ideal circumstances - no air resistance, elastic collision (i.e., perfect bounce), the ball should bounce back to the same height from which it was dropped, due to conservation of energy. In practice, some energy is always lost, both due to air resistance and to a non-perfect bounce.
What is the kinetic energy of a ball when it is dropped from a height and it falls on a table?
it is the difference of the potential energy when the body is on the table and from the position where it is dropped.
Does gravitational acceleration calculate potential energy?
Gravitational potential energy describes how much energy a body has in store by virtue of having been elevated to a specific height. The formula to calculate gravitational potential energy is:.U = mgh.Where:U is the potential energym is the mass of the objectg is the acceleration due to gravity, andh is the height the object will fall if dropped.
How do you calculate maximum height?
Kinetic Energy or Potential energy= mass x gravity x height
Can a ball rebound to a height greater than the height from which is was dropped?
no,due to physics the rebound weight and energy
A rock is dropped from a height of 30 m and is in free fall What is the velocity of the rock as it reaches the ground 2.5 seconds later?
There are several ways to solve this. An elegant way is using conservation of energy: If you neglect air resistance, after dropping 30 meters, all the potential energy is converted to kinetic energy. So, just calculate the potential energy at the top, assume the kinetic energy at the bottom is the same value, and solve the kinetic energy equation for speed.
The impact energy of a mass 0.9kg is 7kgm at what height is the mass dropped at?
7.78 M.
An object with a mass of fifteen kilograms is dropped from a building neglecting friction which is the buildings height?
It's not possible to calculate the answer with the information given.An object with a mass of 15 kg can be dropped from a building of any height.
What best describes the object's energy as it falls trough the air from the stationary position at height x?
The potential energy it had at height x when it was not moving is equal to the kinetic energy it will have as it is falling. Why? Law of the Conservation of Energy. Energy before will equal energy after.
Formula to calculate gravitational potential energy?
wight x height
What 3 thing are necessary to calculate potiential energy?
Height & weight.
What is the kinetic energy of an object weighing 65 kg dropped from a height of 40m?
Kinetic energy is dependent on which point you are talking about. When it is about to be dropped, kinetic energy is zero. When it reaches almost hits the ground, there is maximum kinetic energy.
How does the height a boucny ball is dropped from effect the height it bounces to?
The higher the height the ball is dropped from, the higher the height it will bounce to.
The formula Weight x Height is used to calculate what kind of energy?
Relative gravitational potential energy.
How do you calculate change in potential energy?
The change in potential energy is equal to mass*gravity*change in height
How would you calculate an objects gravitational potential energy?
Multiply its weight by its height.
When a ball is dropped from a height does it display kinetic or potential energy?
KINETIC ENERGY NOTE : If a object is at rest it will have the potential energy but the MOVING body will always have kinetic energy
Why can't a ball bounce higher than the height from which it was dropped?
The energy in the ball is converted into other forms of energy ( sound energy/heat energy ) when it bounced on the floor.
What two properties does the amount of potental energy depend upon?
Weight and height. The potential energy of an object is its weight times its height. The potential energy is turned into kinetic energy as the object is dropped. Potential energy is weight times height, kinetic energy is one half mass times velocity-squared. Mgh = ½ M V^2 To reach a speed of 10 m/s this equation can be solved to show that the object must be dropped through a height of 5.1 metres.
How do you calculate the gravitational potential energy?
PE = mgh potential energy = mass x gravity x height
Which factors must be known to calculate an objects gravitational potential energy?
height and mass.
Which factors must be known to calculate an object's gravitational potential energy?
height and mass
What factors must be known to calculate an objects gravitational potential energy?
its mass and height
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