Explain acceleration in brief with example.
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Answer:
In physics, acceleration is the rate of change of velocity of an object with respect to time. An object's acceleration is the net result of all forces acting on the object, as described by Newton's Second Law. The SI unit for acceleration is metre per second squared.
An object was moving north at 10 meters per second. The object speeds up and now is moving north at 15 meters per second. The object has accelerated. An apple is falling down.
Acceleration is a measure of how fast velocity changes. Acceleration is the change of velocity divided by the change of time. Acceleration is a vector, and therefore includes both a size and a direction.
The acceleration therefore remains the same, and the velocity is unaltered.
The pull recorded on the diagram includes the resistances due to acceleration and to the gradient on which the train is moving.
Since the difference between the acceleration of gravity at the pole and at the equator is about 2%, the correction for latitude will be quite sensible in an instrument which might be used at various times in high and low latitudes.
By using a formula that takes into account the acceleration of gravity, you calculate the time it takes for an object to fall to the ground.
The acceleration of a falling body is naturally attributed to the presence of the earth; and, though the body approaches the earth in the course of its fall, it is easily recognized that the conditions under which it moves are only very slightly affected by this approach.
Common examples of acceleration in real life are an object falling and a car speeding up to pass another car. All falling objects will accelerate under the force of gravity until they reach a terminal (maximum) velocity, while a car generates the force to speed up from pressing on the gas pedal to burn more fuel for energy.
Acceleration tells a person if an object's speed is increasing over a period of time. An object can accelerate while already moving, such as a car overtaking another, or from a complete rest, such as a car speeding up after stopping at a red light. The standard units for acceleration are meters or feet per second squared.