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You know that KE equals one half MV2 but is there an equation you can use to calculate the total kinetic energy required to accelerate an object of known mass to a known speed over a known time?
same equation, ke = your known mass x your known speed squared. get the units right and your good to go.
How do you derive the equation e equals mc2?
E=mc2 is derived from the equation for kinetic energy Ke = mv2. The mathematics and concepts of special and general relativity shows that the absolute maximum velocity anything can have is the speed of light. The maximum amount of energy anything can possess is simply calculated from its mass and this maximum velocity squared.
Parallelogram PAKE has diagonals PK and AE intersect at R perimeter of triangle AKE equals 33 perimeter PAKE equals 42 length of AE is?
Perimeter of PAKE = 42 units so PA + AK + KE + EP = 42 units But, since PAKE is a parallelogram, PA = KE and EP = AK which gives KE + AK + KE + AK = 42 units or AK + KE = 42/2 = 21 units. Now, perimeter of AKE = 33 units that is AK + KE + EA = 33 units But AK + KE = 21 units so 21 + EA = 33 units so EA = 33 - 21 = 12 units.
How much work has to be done on a 5 kg sled to increase its speed from 10 m s to 15 m s?
Work is simply a transfer of energy. Calculate the kinetic energy for both speeds, then calculate the difference. The formula for kinetic energy is KE = (1/2)mv2. If the mass is in kilograms, and the velocity (or speed) is in meter/second, the energy is in Joule.
How do you find the mass when given speed and kinetic energy?
You solve the equation for kinetic energy for mass. KE = (1/2) m v2 (1/2) m v2 = KE m = 2 KE / v2
You know that KE equals one half MV2 but is there an equation you can use to calculate the total kinetic energy required to accelerate an object of known mass to a known speed over a known time?
same equation, ke = your known mass x your known speed squared. get the units right and your good to go.
What formula do you use to caculate kinetic energy?
Ek = 0.5mv2Kinetic energy equals half times mass times the square of the velocity. Using SI units, mass in kilograms and velocity in metres per second, the energy will be in Joules.
Two particles of equal mass have the same linear momentum Which one has greater KE?
They are the same. Momentum is the product MV - mass times velocity. KE = 0.5 MV2
A 2 kg object is dropped from a height of 12 m Using the conservation of energy calculate the speed it has at the end of the 12 m fall?
Use the formula KE = (1/2)mv2 (kinetic energy equals 1/2 times mass times the square of the velocity).Use the formula KE = (1/2)mv2 (kinetic energy equals 1/2 times mass times the square of the velocity).Use the formula KE = (1/2)mv2 (kinetic energy equals 1/2 times mass times the square of the velocity).Use the formula KE = (1/2)mv2 (kinetic energy equals 1/2 times mass times the square of the velocity).
How fast is a 4kg bird flying if it has 8 joules of kinetic energy?
Use the formula KE = 1/2 mv2 (kinetic energy = 1/2 times mass times velocity squared).Use the formula KE = 1/2 mv2 (kinetic energy = 1/2 times mass times velocity squared).Use the formula KE = 1/2 mv2 (kinetic energy = 1/2 times mass times velocity squared).Use the formula KE = 1/2 mv2 (kinetic energy = 1/2 times mass times velocity squared).
What is the Energy that moving things have as a result of their motion?
Kinetic energy KE = mv2 m=mass, v=velocity
How do velocity and mass affect an objects kinetic energy?
The formula is: KE = (1/2) mv2
What two things do the kinetic energy of an object depend on?
KE = mv2 The mass and the squared velocity of the object.
What is the energy if mass is 2 and the velocity is 4?
Insert the values in the formula for kinetic energy: KE = (1/2)mv2.
What is the formula to kinetic energy?
KE = (1/2)mv2 (1/2 x mass x speed squared)
How does kinetic energy increase as a velocity?
KE=(1/2)mv2, therefore, kinetic energy is proportional to the square of the speed.
When mass and speed of a moving body are doubled what happens to its kinetic energy?
Momentum = (mass x velocity) = M V If velocity is doubled, then new momentum = (M x 2V) = 2 x (M V) = double the original momentum. ========================= Kinetic energy = 1/2 M V2 If 'V' is doubled, then new KE = (1/2 M) (2V)2 = (1/2 M) (4V2) = 4 (1/2 M V2) = 4 times original KE.
