Question

Disfine the following a. Displacement b. speed c. motion.​

Answer 1

Answer:

a) displacement is a vector whose length is the shortest distance from the initial to the final position of a point P undergoing motion.

b) Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a given amount of time, while a slow-moving object covers a relatively small amount of distance in the same amount of time.

c) Motion, in physics, change with time of the position or orientation of a body. ... Motion that changes the orientation of a body is called rotation. In both cases all points in the body have the same velocity (directed speed) and the same acceleration (time rate of change of velocity).

Explanation:

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Answer 2

Answer:

$\rm{Displacement:-}$

Displacement is a vector quantity that refers to "how far out of place an object is".

Displacement is the shortest distance traveled by a body from one point to other say ( A to B ).

A ------------------------------> B

$\rm{Speed:-}$

It may be defined as distance per unit time is known as speed.

$\rm \: Speed= \frac{distance}{time}$

SI unit = m/s

$\rm{Motion:-}$

Change in position over time is known as motion.

Types of motion:-

• Uniform motion
• Non-uniform motion