Question

a bus decreases its speed from 80 km/hr to 60 km/hr in5 sec.find the acceleration of the bus..pllllllzzzzzzzzz give me its ans with easy steps.................................................................

Answer 1

Answer:

here is your answer

Explanation:

Initial speed   u=80 km/h=80×  

18

5

​  

=22.22 m/s

Final speed    v=60 km/h=60×  

18

5

​  

=16.67 m/s

Using   v=u+at

Or   16.67=22.22+α×5

⟹ a=−1.1 m/s  

2

Answer 2

$\star\:\:\:\bf\large\underline\green{Given:–}$

The bus decreases it's speed from 80 km/hr to 60 km/hr in 5 sec.

$\star\:\:\:\bf\large\underline\green{To\:find:–}$

Acceleration of the bus = ?

$\star\:\:\:\large\underline\green{Solution:—}$

Initial speed,u = 80 km/hr = 80×5/18 = 22.22 m/s

Final speed,v=60 km/hr =60×5/18 = 16.67 m/s

$\boxed{\bf{\red{Formula\:used:v=u+at}}}$

⇝16.67 = 22.22 + a × 5 m/s²

⇝a = –1.1 m/s²

$\boxed{\bf{\purple{a=–1.1\:m/s²}}}$

Hence,acceleration of the bus is –1.1 m/s²