Question

Define uniformly accelerated motion and give one example of it.

Answer 1

Hint: Give the definition of acceleration of an object. Then recall the concept of uniformly accelerated motion of an object. Give the condition of variation of velocity with the time for the accelerated motion of an object to be uniformly accelerated motion. According to the explanation given for uniformly accelerated motion, give its example in everyday life.

Complete answer:
We know that the acceleration of an object is the rate of change of velocity of that object with time.
The motion of an object is said to be uniformly accelerated if the velocity of the object is increasing or decreasing by equal amount in the same amount of time.
The example of uniformly accelerated motion is the motion of a projectile along its parabolic path because the only acceleration acting on the projectile throughout its motion is the acceleration due to gravity in the downward direction.

Additional Information:
The uniform acceleration of an object is also known as the constant acceleration as the acceleration of the object remains constant throughout the motion of the object.
For an object whose velocity increases uniformly with time, the acceleration is uniform and positive.
For an object whose velocity decreases uniformly with time, the acceleration uniform but negative. Hence, this acceleration is called uniform negative acceleration of uniform retardation.
The motion of an object falling freely is also an example of uniformly accelerated motion.

Note:
As we have given the definition of accelerated motion of an object, the rate of change of velocity should be uniform.
But in the actual uniformly accelerated motion, there may be slight differences in the velocity change due to varying air resistance and other atmospheric conditions.