The dimension of a physical quantity is defined as the power to which the fundamental quantities are raised to express the physical quantity. The dimension of mass, length and time are represented as [M], [L] and [T] respectively. For example: We say that dimension of velocity are, zero in mass, 1 in length and -1 in time.
Newton studied about motion scientifically and concluded some results which are called Newton’s laws of motion. There are three laws of motion. All three laws define force in different ways. First law defines force qualitatively, second law defines quantitatively and third law highlights that single and isolated force is not possible. Newton’s First Law of Motion According to Netwon’s first law of motion,
Linear Momentum Momentum is the motion contained in a body. Quantity of motion possessed by a body depends upon both of its mass and velocity. So the product of mass and velocity is the measure of the momentum,
What is Friction?
Kinetic Energy The energy possessed by a body due to its motion is called kinetic energy. So from the definition, it is known that kinetic energy increases with increase in speed of the particle. Few examples of bodies possessing kinetic energy are a moving bus, moving water in a river, a moving bullet, etc.