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When a car's speed is reduced to half how is its kinetic energy affected?
Wiki User
∙ 10y ago
KE = (0.5) x mass x V x V [at velocity V]
KE = (0.5) x mass x (0.5V) x (0.5V) [at velocity 0.5V]
Ratio = [0.5 x mass x V x V] / [0.5 x mass x 0.25 x V x V] = [1] / [0.25] = 4
This means that the KE will be 1/4 at half the speed compared to KE at the original speed
Wiki User
∙ 10y ago
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What happens to the kinetic energy of a body if its speed is reduced to half?
If the speed of a moving body is reduced to half, its kinetic eneergy is reduced to 1/4 .
What types of forces affect kinetic energy?
Kinetic energy depends on mass and speed. It is not directly affected by any force; however, a force can, of course, make an object move faster or slower, and thus indirectly affect kinetic energy.
What is the relationship between speed and kinetic energy?
The kinetic energy of an object is proportional to the square of its velocity (speed). In other words, If there is a twofold increase in speed, the kinetic energy will increase by a factor of four. If there is a threefold increase in speed, the kinetic energy will increase by a factor of nine.
What is the relationship between energy and the speed?
The kinetic energy of an object is proportional to the square of its velocity (speed). In other words, If there is a twofold increase in speed, the kinetic energy will increase by a factor of four. If there is a threefold increase in speed, the kinetic energy will increase by a factor of nine.
What happened to kinetic energy is speed is halved?
The formula for kinetic energy is: KE = mv^2, in which m is mass in kilograms and v is speed in meters/second, or m/s. The unit for kinetic energy is the Joule (J), which is one kilogram·m^2/s^2. If the speed of a mass is halved, it's kinetic energy will be reduced by one quarter. For example, if a 1 kg mass has a speed of 4 m/s, its kinetic energy = 1 kg(4 m/s)^2 = 16 J. If the speed of the 1 kg mass is halved to 2 m/s, its new kinetic energy = 1 kg(2 m/s)^2 = 4 J.
What happens to the kinetic energy of a body if its speed is reduced to half?
If the speed of a moving body is reduced to half, its kinetic eneergy is reduced to 1/4 .
How is the amount of kinetic energy affected by speed?
fRiCtIoN!!
Example of conversion of gravitational potential energy into kinetic energy?
The simplest example is a falling object. Its potential energy is reduced, while its speed, and thus its kinetic energy, increases.
What will happened to the ke if its velocity is reduced by 12 times?
Kinetic energy is proportional to the square of the speed. If you reduce the speed by a factor of 12, the kinetic energy will reduce by a factor of 12 x 12 = 144.Kinetic energy is proportional to the square of the speed. If you reduce the speed by a factor of 12, the kinetic energy will reduce by a factor of 12 x 12 = 144.Kinetic energy is proportional to the square of the speed. If you reduce the speed by a factor of 12, the kinetic energy will reduce by a factor of 12 x 12 = 144.Kinetic energy is proportional to the square of the speed. If you reduce the speed by a factor of 12, the kinetic energy will reduce by a factor of 12 x 12 = 144.
What types of forces affect kinetic energy?
Kinetic energy depends on mass and speed. It is not directly affected by any force; however, a force can, of course, make an object move faster or slower, and thus indirectly affect kinetic energy.
How does kinetic energy affect speed?
The kinetic energy of an object is proportional to the square of its speed.
How does the speed of particle affect its kinetic energy?
The higher the speed the more the kinetic energy.
What is the relationship between speed and kinetic energy?
The kinetic energy of an object is proportional to the square of its velocity (speed). In other words, If there is a twofold increase in speed, the kinetic energy will increase by a factor of four. If there is a threefold increase in speed, the kinetic energy will increase by a factor of nine.
Does kinetic energy increase with speed and time?
Time is not a factor, speed is velocity and velocity equates to kinetic energy. E=Mass * Velocity squared.
What is the speed of an object increases its kinetic energy .?
The kinetic energy depends on both mass and speed. If either mass or speed increase, the kinetic energy will increase as well.
What is the relationship between energy and the speed?
The kinetic energy of an object is proportional to the square of its velocity (speed). In other words, If there is a twofold increase in speed, the kinetic energy will increase by a factor of four. If there is a threefold increase in speed, the kinetic energy will increase by a factor of nine.
If the speed of an object doubles the kinetic energy of the object?
At twice the speed, the kinetic energy will be four times greater.
