when are objects said to be accelerating?

. Thus, it is clear that the term 'acceleration' need not always mean that the speed of a moving body is always increasing, it can also decrease, remain the same or become zero. In general, acceleration is defined as the rate of change of velocity of a moving body with time. Thi..

. In general, acceleration is defined as the rate of change of velocity of a moving body with time. This change could be a change in the speed of the object or its direction of motion or both. Now let us get a mathematical formula for calculating acceleration. Let an h..

Definition - The acceleration of a moving point is the rate of change of its velocity. Note that the acceleration of a moving object is a vector, as it has both magnitude and direction. The acceleration is uniform when equal changes of velocity take place in ..

If the change in velocity is zero, i.e., either the object is at rest or moving with uniform velocity, then the object is said to have zero acceleration. Example: a parked car, a train moving with a constant speed of 90 km..

If the change in velocity in equal intervals of time is always the same, then the object is said to be moving with uniform acceleration. Example: a body falling from a height towards the surface of the ear..

If the velocity of an object increases then the object is said to be moving with positive acceleration...

If the velocity of an object decreases then the object is said to be moving with negative acceleration. Negative acceleration is also known as retardation or deceleration. Example: (1) A ball moving up an inclined plane. Example of Negative ..

Falling Objects and Acceleration due to Gravity - We know that whenever an object is dropped from a height, it falls towards the Earth. Similarly, when an object is projected vertically upwards, it goes up but after attaining a certain height, it starts falli..

We know that whenever an object is dropped from a height, it falls towards the Earth. Similarly, when an object is projected vertically upwards, it goes up but after attaining a certain height, it starts falling down. It is the force of gravitation which pulls the object..

The objects which move towards the Earth due to force of gravity are called freely falling objects..