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nicolas38
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We now that a car is starting to move because of the static friction. We now also that the work of static friction is zero.My question is: the work of what force is responsible for the cars kinetic energy;
Hint: What do you pay for to run the car?nicolas38 said:We now that a car is starting to move because of the static friction. We now also that the work of static friction is zero.My question is: the work of what force is responsible for the cars kinetic energy;
Kinetic energy is the energy that an object possesses due to its motion. It is a scalar quantity and is dependent on the mass and velocity of the object.
The formula for kinetic energy is KE = 1/2 * m * v^2, where KE is the kinetic energy, m is the mass of the object, and v is the velocity of the object.
The force responsible for a car's kinetic energy is the engine's power. The engine converts chemical energy from fuel into mechanical energy, which is then used to move the car and give it kinetic energy.
Friction is a force that opposes motion, so it acts against the car's kinetic energy. When a car is moving, friction between the tires and the road causes the car to slow down, decreasing its kinetic energy.
Yes, a car's kinetic energy can be increased or decreased. The kinetic energy of a car can be increased by either increasing its mass or its velocity. It can be decreased by applying a force in the opposite direction of the car's motion, such as braking or air resistance.