Request a call back

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

ICSE Class 10 Answered

A car along with passengers weighs  2000 kg it accelerates from 36 km per hour to 90 km per hour in 10 seconds calculate a.acceleration b. Distance  covered by car while accelerating c. momentum of car after 10 second d.force developed by the engine of car e.Total energy expanded during accelerationf. power of the engine in Kilowatt
Asked by Samrat | 30 Jun, 2018, 07:18: PM
Expert Answer
initial speed = 36 km/hr = 36×(5/18) = 10 m/s ; final speed = 90 km/hr = 90×(5/18) = 25 m/s
 
(a) acceleration ; formula to be used   :- " v = u+a t ",  acceleration a = (v-u)/t = (25-10)/10 = 1.5 m/s 
 
(b) distance ; formula to be used :- " S = u t +(1/2) a t2 " , distance = 10×10 + (1/2)×1.5×10×10 = 175 m
 
(c) momentum = mass × speed  = 2000×25 = 50000 Kgm/s
 
(d) force = mass × acceleration = 2000×1.5 = 3000 N
 
(e) Energy = workdone = force ×distance = 3000×175 = 5,25,000 J
 
(f) Power = Energy /time = 525000/10 = 52500 W = 52.5 kW
Answered by Thiyagarajan K | 02 Jul, 2018, 02:17: PM
ICSE 10 - Physics
Asked by m.sribhargav2007 | 03 Feb, 2023, 08:53: PM
ANSWERED BY EXPERT
ICSE 10 - Physics
Asked by danieldenison0425 | 03 Feb, 2023, 02:02: PM
ANSWERED BY EXPERT
ICSE 10 - Physics
Asked by vchhetri | 02 Feb, 2023, 08:03: PM
ANSWERED BY EXPERT
ICSE 10 - Physics
Asked by tejaswamaurya77 | 10 Jan, 2023, 10:45: PM
ANSWERED BY EXPERT
ICSE 10 - Physics
Asked by KANRAR.SOUMEN | 20 Dec, 2022, 10:04: AM
ANSWERED BY EXPERT
ICSE 10 - Physics
Asked by Varsharedddi.d | 19 Dec, 2022, 07:57: AM
ANSWERED BY EXPERT
ICSE 10 - Physics
Asked by vinitadwivedi13 | 18 Dec, 2022, 03:14: PM
ANSWERED BY EXPERT
ICSE 10 - Physics
Asked by kumersingh1965 | 05 Aug, 2022, 06:56: PM
ANSWERED BY EXPERT
ICSE 10 - Physics
Asked by debanishap | 13 Jul, 2022, 10:41: PM
ANSWERED BY EXPERT
Get FREE Sample Mock Papers for Final Exams
Download Now
×