Question

a bus is running at a speed of 5 metre per second and stop at 2.5 second by applying brake what is the retardation​

Answer 1

Explanation:

Hope it works do not forget to put m/s2

Answer 2

Answer:

retardation is 2 m/$s^{2}$

Explanation:

Initial Velocity u = 5m/s , final velocity v = 0m/s, time taken t = 2.5s

$acceleration = \frac{v-u}{t} = \frac{0-5}{2.5} = \frac{-5}{2.5} = \frac{-2}{1} = -2m/s^{2}$

Therefore acceleration = -2m/$s^{2}$

while retardation is 2m/$s^{2}$