It will be 8000 joules. ( if the velocity of a car has been doubled, the KE will be quadrupled. Because the KE is directly proportional to the velocity squared.)
KE= 1/2 m v2
9 x 2000 = 18,000. 9 is the square of 3.
9 x 2000 = 18,000. 9 is the square of 3.
9 x 2000 = 18,000. 9 is the square of 3.
9 x 2000 = 18,000. 9 is the square of 3.
Kinetic energy =1/2*m*v2
so if 2000=1/2*m*v12 when the velocity double the energy will increase 22 =4 times making 8000j
The car's kinetic energy is 900,000 joules.
It becomes less since the weight is doubled so it becomes harder for the energy to push it
A car has a mass of 2,000 kg and is traveling at 28 mpersec what is the carβs kinetic energy
And what is the question?
9 x 2000 = 18,000. 9 is the square of 3.
To measure kinetic energy:Let us suppose an object of mass m moving wtih velocity vKinetic Energy of that object= mv2/2
If the speed of a moving object doubles, the kinetic energy of the object also doubles. This is because kinetic energy is directly proportional to the square of the speed of an object (KE = 0.5 * m * v^2), so if the speed doubles, the kinetic energy will quadruple.
Kinetic energy = 1/2 (mass) (speed)2 = 1/2 (0.2) (200)2 = 4,000 joules
When the speed of an object doubles, its kinetic energy increases by a factor of four. Kinetic energy is directly proportional to the square of the speed of an object, so when speed doubles, kinetic energy increases by four times the original amount.
Assuming non-relativistic speeds: Doubling the speed will quadruple the kinetic energy.
To measure kinetic energy:Let us suppose an object of mass m moving wtih velocity vKinetic Energy of that object= mv2/2
If the speed of an object doubles, its kinetic energy quadruples. This is because velocity is squared in the formula for kinetic energy.
The object's kinetic energy is 78.4 joules.
At twice the speed, the kinetic energy will be four times greater.
Kinetic energy = 1/2 (mass) (speed)2 = 1/2 (0.2) (200)2 = 4,000 joules
Kinetic energy = (1/2)*mass*(speed)^2 where, in metric units, mass is in kilograms, speed is in meters/second, and kinetic energy is in Joules. So, you need to know the mass and the speed of the things.
Assuming non-relativistic speeds: Doubling the speed will quadruple the kinetic energy.
-It increases
80 (20 x 22).
78.4 joules at 2.8m/s
The kinetic energy of any moving object is 1/2 of (its mass) x (the square of its speed). The SI unit of any kind of energy is Joules.
kinetic energy depends on speed an potential energy depends on height and mass