Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 9 Answered

A car travels 30km at a uniform speed of 40km/h and the next 30km at a uniform speed of 30km/h. Find its average speed.
Asked by vishwakarmabrijesh29 | 16 Apr, 2019, 08:07: PM
answered-by-expert Expert Answer
Time taken to cover first 30 km = 30/40 = 3/4 = 0.75hr
Time taken to cover next 30 km = 30/30 = 1 hr
 
As we know  average speed = total distance/total time
 So avg speed = 60/(1+0.75) = 60/1.75 = 34.29 km/hr 
Answered by Ankit K | 16 Apr, 2019, 11:04: PM
CBSE 9 - Physics
Asked by mailtoparvathyprajith | 06 Feb, 2024, 09:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by asyadav1230 | 20 Dec, 2022, 07:17: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by drnaimansari2222 | 11 Jun, 2022, 04:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by suzanesharma307 | 30 May, 2022, 11:03: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Physics
Asked by syedmehdiali543 | 17 Apr, 2022, 04:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×