Question

A bus decreases its speed from 80m/s to 60m/s in 10s. find the acceleration of the bus.​

Answer 1

Answer:

-2m/s^2

Explanation:

u=80m/s

v=60m/s

t=10s

a

$a = \frac{v - u}{t } \\ a = \frac{60 - 80}{10} \\ a = \frac{ - 20}{10 } \\ a = - 2 \frac{m}{ {s}^{2} }$

Answer 2

Hey friend here is your answer!!

acceleration=(final velocity-initial velocity)/Total time taken

Here,

initial velocity=80m/s

final velocity=60m/s

Total time taken=10s

Therefore,

acceleration=(60m/s - 80m/s)/10s

= -20/10

= -2 m/s square

Therefore the retardation is 2m/s square...

☺Hope it helps☺