The energy associated with motion is called kinetic energy. All energy comes in two basic forms: potential energy, meaning stored energy, and kinetic energy, meaning the energy of movements.Know More
The kinetic energy of an object is the energy that an object possesses due to its motion. In other words, the work needed to move or accelerate an object from a state of rest to its stated velocity is kinetic energy. All moving objects have kinetic energy. The word kinetic has its roots in the Greek word "kinesis," which means motion.
Kinetic energy can further be subdivided into four different categories: mechanical energy, thermal energy, electrical energy and electromagnetic radiation. The motions of people, objects and planets, the vibrations of atoms by sound waves, and the movement of electrons in electricity are a few examples of kinetic energy.Learn more about Physics
An object is said to have uniform velocity if the direction of motion and the rate at which the object changes its position is constant. In other words, an object with uniform velocity continues to cover the same amount of distance over the same time interval without changing its direction.Full Answer >
Friction always opposes motion between two surfaces, although it is not a fundamental force of the universe like gravity. The coefficient of friction is used to describe the ratio of friction between two bodies and the outside force pressing them together.Full Answer >
An object's acceleration is constant and downward due to the force of gravity In projectile motion, but the object's velocity reverses direction during the object's motion. This is because of the inertia described in Newton's first law of motion and because acceleration and velocity are two different physical quantities. Velocity is the speed and direction of an object, while acceleration is the rate that the velocity changes.Full Answer >
An object with more weight resists any change in its speed and has a greater tendency to maintain its motion. This is because an object with more weight is more massive, and an object that is massive has more inertia that causes it to resist any change in speed.Full Answer >