Question

A bus decreases its speed from 80km/ hr to 50 km/hr in 4 sec find it's acceleration.

Answer 1

Hey mate!!

✴ PHYSICS ✴
__________________

Initial velocity (u) = 80km/hr

=> 80 × 5/18

=> 400/18 ...m/s

Final velocity (v) = 50km/hr

=> 50 × 5/18

=> 250/18 m/s

Time taken (t) = 4 sec.

acceleration (a) = ?

We know that ,

v = u + at

=> a = v - u/t

Refer to the attachment above for your answer..

✴Thanks for the question!!✴

Answer 2

HEYA MATE, HERE IS UR ANSWER __________________________

Initial velocity (u)=80km/hr
= 80 ×5/18
= 400/18m/sec

Final velocity(v) =50km/hr
= 50×5/18
=250/18m/sec

Time(t)=4sec

acceleration (a)=V-u/t

a=250/18-400/18/4
a=-150/18/4
a=-150/72
a=-2.08m/sec^2.


______☆☆HOPE THE ANSWER HELPS YOU ☆☆_______☆☆BE BRAINLY ☆☆______☆☆