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How much work must be done on a 10 kilograms bicycle to increase its speed from 2 meters per second to 3 meters pe second?
When the bike is moving at 2 m/s, its kinetic energy is (1/2 m v2) = (5 x 4) = 20 joules.When it's moving at 3 m/s, its kinetic energy is (1/2 m v2) = (5 x 9) = 45 joules.The difference between initial KE and final KE is (45 - 20) = 25 joules.That's how much work you have to do on it in order to increase its KE.
How is gravitational potential energy expressed?
It's the position above the surface Potential Energy: stored energy Kinetic Energy: energy's movement (moving)
Which has more kinetic energy a motorcycle moving at 100km per hour or a truck moving at 100km per hour why?
KE = 1/2 mass *velocity squared A direct relationship. More mass, and a truck has more mass, and the more kinetic energy if velocities are held equal.
What is the kinetic energy of a 900 kg car moving 80 miles per hour?
The kinetic energy is one half the mass times the velocity squared KE = 1/2 mv^2 First you cannot mix English and metric units, so you need to convert miles per hour to meters per second and your answer will be in kg m^2/sec^2 or joules 80 mph = 35.76 meters per second KE = 1/2 (80) x (35.76)^2 = 51,151 joules
How do you find work given mass initial velocity and final velocity?
We assume you mean the work done in order to change the velocity of the moving mass.Easiest way is to calculate the change in the kinetic energy of the moving mass, and realizethat it's equal to the amount of work either put into the motion of the mass or taken out of it.Initial kinetic energy = 1/2 m Vi2Final kinetic energy = 1/2 m Vf2Change in kinetic energy = 1/2 m ( Vf2 - Vi2)
Which object had more kinetic energy the one that has a mass of 2 kilograms or the one with the mass of 4 kilograms and was lifted at a rate of 3meters per second?
The object with the mass of 4 kilograms that was lifted at a rate of 3 meters per second would have more kinetic energy. Kinetic energy depends on both mass and velocity, so the increased mass more than compensated for the lower velocity compared to the 2-kilogram object.
Is touching a kinetic energy?
Kinetic energy is the energy of motion. Your touching finger has mass and is moving some meters per second, so that motion is kenetic energy.
What kinetic energy does a ceiling fan have?
The kinetic energy of a ceiling fan depends on its mass and the speed at which it is spinning. The formula for kinetic energy is 0.5 * mass * velocity^2, where mass is in kilograms and velocity is in meters per second. Generally, the kinetic energy of a ceiling fan is relatively low compared to other moving objects.
What forms of energy does a car have?
a moving car has kinetic energy which is defined by the equation "Kinetic Energy = (1/2) X Mass (Kilograms) X (Velocity (m/s))2
Which is example of kinetic energy?
Any moving object has kinetic energy.
What forms of energy does a moving car have?
A moving car has kinetic energy as a result of its motion, as well as potential energy stored in its fuel if it has not been fully converted to kinetic energy yet. Additionally, the car's engine generates mechanical energy used for propulsion.
What is the kinetic energy of a 8.47E plus 4 gram person moving at a velocity of 24.9 meters per second?
The kinetic energy of the person can be calculated using the formula: KE = 0.5 * mass * velocity^2. First convert the mass to kilograms (1 gram = 0.001 kg), then plug in the values to find the kinetic energy. The result will be in Joules.
If an object weighing 90 kilograms and moving with a velocity of 20 meters per second has a kinetic energy of 4500 Joules. what is its kinetic energy when the velocity is 32 meters per second?
Kinetic energy is directly proportional to the square of velocity, so the kinetic energy will increase. If the velocity increases from 20 m/s to 32 m/s, the kinetic energy will increase by a factor of (32/20)^2 = 2.56. Therefore, the kinetic energy will be 4500 Joules * 2.56 = 11520 Joules when the velocity is 32 m/s.
Is a plane moving kinetic energy?
Yes, a plane moving has kinetic energy. Kinetic energy is the energy of motion, and an object in motion, such as a plane flying through the air, possesses kinetic energy.
What type of energy does a moving ball have?
A moving ball has kinetic energy, which is energy associated with its motion.
Why is cycling kinetic energy?
Kinetic energy is the energy of moving things, And a bicycle in use is a moving thing.
What is the kinetic energy of a 4 kilograms object moving at 6 meters per second?
KE = 1/2 * mass * velocity squared KE = 1/2mV2 KE = 1/2(4 kilograms )(6 m/s )2 = 72 Joules ---------------
