# Question #7029d

Sep 11, 2017

SEE EXAMPLES

#### Explanation:

Units help us to determine the physical quantity easily.
For ex-

You want to write a velocity of 5 m/s.

But you wrote 5.

Now i see it as 5. How will i come to know that its velocity?

Now you will say that i will write Velocity before it.

So consider this questions,

A body moving with $5 \frac{m}{s}$ and $25 \frac{m}{s} ^ 2$ travels 25m .Find the time req.

But now.

A body moving with 5 and 25 travels 25. find the Time required. .

Now you might have understood.