Question

Which physical identity has the unit ms -square ?​

Answer 1

Answer:

Acceleration.

Step-by-step explanation:

Acceleration can be defined as the rate of change of the velocity of an object with respect to time.

This simply means that, acceleration is given by the subtraction of final speed from the initial speed all over time.

Hence, if we subtract the final speed from the initial speed and divide that by the time, we can calculate an object’s acceleration.

Mathematically, acceleration is given by the equation;

$Acceleration (a) = \frac{initial speed - final speed}{time}$

$a = \frac{v - u}{t}$

Where,

a is acceleration measured in $ms^{-2}$

v and u is initial and final speed respectively, measured in $ms^{-1}$

t is time measured in seconds.

Additionally, acceleration is a vector quantity because it has both magnitude and direction.  

Hence, acceleration is a physical identity or quantity which has the unit ms -square (m/s²).