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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?
Wiki User
∙ 11y ago
same equation, ke = your known mass x your known speed squared.
get the units right and your good to go.
Wiki User
∙ 11y ago
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How is friction good and bad?
Friction is good because it provides traction. Friction is necessary for people to stand, or for vehicles to accelerate or break. Friction can also be used to convert kinetic energy to heat or electrical energy. Friction can be bad because kinetic energy is can be lost to friction.
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
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.
What is the equation for a falling object?
The equation for the kinetic energy of a falling object is kinetic energy=1/2 an object's mass multiplied by it's speed squared. From this, we can work out the speed. First you need to know its weight and its kinetic energy. The kinetic energy is obtained by working out it's potential energy before it fell (Potential energy= mass multiplied by gravitational pull multiplied by height. Then, at whatever point during the fall, the decrease in potential energy marks the increase in kinetic energy. From then we work out the speed. Example; An object that weighs 8.1 kilograms is 10 metres above the ground. It's potential energy is therefore 8.1x10(gravitational pull on earth is always 10)x10. So it has a potential energy of 810 joules. it falls 5 metres, so it's potential energy is 8.1x10x5 (405 joules). The total energy, we know, is 810J, so 810-a05=405, giving it kinetic energy of 405J. The kinetic energy formula is then rearranged as speed squared=kinetic energy/ 0.5m. Our equation is therefore speed squared= 405/4.05, so speed squared=100. The square root of 100 is 10 so the speed is 10 metres per second (36 kilometres per hour).
What does independent variable and dependent variable mean and what they do?
It means that you can change one variable (the independent variable) freely, but that the other variable (the dependent variable) depends on the independent variable. For example, to calculate kinetic energy, the energy (for a given object) depends on the speed; if you change the speed, you change the kinetic energy. You can't change the kinetic energy directly, only indirectly by changing the speed.
Do you have an equation to calculate kinetic energy?
KE=1/2mvsquared
How do you calculate the kinetic equation when H2O2 exist in environment?
Not enough information
You can calculate kinetic energy by using the equation what?
KE=1/2*m*v2whereKE is kinetic energym is the massand V is the velocity
How do you calculate the gain of Kinetic Energy?
You calculate the new kinetic energy, you calculate the old kinetic energy, then you subtract.
How factors are used to calculate the kinetic energy of an object?
KE = (1/2)mv2 where m = mass (in kilograms), and v = velocity (in meters/second) this gives you the kinetic energy in units of Joules
What is the kinetic energy of the emitted electrons when the cesium is exposed to UV rays of frequency 1.1times 1015Hz?
Before you can do anything with kinetic energy, you must know the kinetic energy equation. The equation for kinetic energy KE=hv-hv0.
What is the coefficient of kinetic energy?
The coefficient of kinetic energy is a constant for friction acting as a retarding or dissipative force to calculate the total force on the object. The coefficient of friction u is represented in equation by the relation F = u*N, where N is the normal force.
How to calculate the kinetic energy of nuetrons?
That would probably depend, what information you have available. If you have the velocity, you can use the standard formula for kinetic energy (1/2 x mass x velocity squared - adjustments are required if it approaches the speed of light).
What factors determine an object's kinetic energy?
Look at the equation for kinetic energy. It clearly shows that the kinetic energy depends on the object's mass, and its speed.
How cn you calculate kinetic energy?
Kinetic Energy = 1/2 Mass * Velocity squared
Which is the correct equation for kinetic energy?
Kinetic Energy = (1/2) x (Mass) x (Velocity)2
How does speed affect a rollet coaster?
it has more kinetic energy. if this is a problem for school, use the equation for kinetic energy.
