Arunner starter race and in 1.25 seconds has a velocity of 5.0 m/s east determine the acceleration of the runner

Answer

The answer to this question is

Explanation

As we know that accelartion is the rate of change of velocity. So, it can be write as

where

is the final velocity

is the initial velocity

t is the time

a is the accelartion

as we konw

a = ?

t = 1.25 s

From rest So,

= 0

Putting values

So, the right answe is

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me