Question
A car covers 20 km in the first hour and 30 km in the last 4 hours. Find:
i) Speed of car in the first hour
ii) Speed of the car in the last four hours
iii) Average speed of the car [3 MARKS]
i) Speed of car in the first hour
ii) Speed of the car in the last four hours
iii) Average speed of the car [3 MARKS]
Answer:
:
Each part: 1 Mark
i) Speed of the car in the first hour =Distancetime
=201kmhr
= 20 km/hr
ii) Speed of the car in the last 4 hours=Distancetime
=304kmhr
= 7.5 km/hr
iii) Total distance covered = 20 + 30 = 50 km
Total time taken = 1 + 4 = 5 hrs
Average speed =TotalDistanceTotaltime=505
= 10 km/hr
Was this answer helpful ?
:
Each part: 1 Mark
i) Speed of the car in the first hour =Distancetime
=201kmhr
= 20 km/hr
ii) Speed of the car in the last 4 hours=Distancetime
=304kmhr
= 7.5 km/hr
iii) Total distance covered = 20 + 30 = 50 km
Total time taken = 1 + 4 = 5 hrs
Average speed =TotalDistanceTotaltime=505
= 10 km/hr
Was this answer helpful ?
More Questions on This Topic :
Latest Videos
Latest Test Papers
Submit Solution