Definition of speed,velocity, gravity, mass, weight, force, impact, work, power and energy
Speed An object is said to be in motion if it changes its position with time, with respect to its surroundings.Speed is defined as the distance moved per unit time, i.e Speed =Distance /Time When we say that an object is at rest or in motion,then this statement is incomplete and meaningless. Basically, rest & … Read more Definition of speed,velocity, gravity, mass, weight, force, impact, work, power and energy