Question

A quantity is measured to be -30m/s. Is it speed or velocity? Give a reason for your answer

Answer 1

Answer:

its velocity

Explanation:

This is so because

$velocity = \frac{displacement}{time}$

as displacement can be -ve ,and so veleocity can be negative

while

$speed = \frac{distance \: covered}{time}$

as distance covered is always +ve , and so speed is always a +ve value

Answer 2

Answer:

Velocity

Explanation:

As it has a ' - ' sign it has to be velocity as speed cannot be negative.

Thank you!