Question

Give reasons to justify the given statements.
a. Displacement of the body can be
positive, negative or zero.
b. Average velocity is not always equal to
average speed.
c. Uniform circular motion is an
accelerated motion.​

Answer 1

Explanation:

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Answer 2

Explanation:

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Physics > Motion in a Straight Line > Average Velocity and Average Speed

Motion in a Straight Line

Average Velocity and Average Speed

Suppose an object is in motion, the position of that object changes with time. But how fast is the position changing with time and in what direction? To understand this, we define average velocity and average speed.

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Average Velocity

Average velocity is the ratio of total displacement to total time. Its direction is the same as the direction of the moving object. Even if the object is slowing down, and the magnitude of the velocity is decreasing, its direction would be still the same as the direction in which the object is moving. The magnitude of average velocity is always less than or equal to the average speed because displacement is always smaller than or equal to distance.