a car travels first 30km with a speed of 60km/hr and the next 30km with a speed of 40km/hr.calculate the average speed
Answers
Answered by
1
Explanation:
For the first 30 km travelled,
speed = 60 km/h
= 0.5 h-1 or 30 min. = 0.75 h-1 or 45 min
= 75 min or 1.25 h.
Answered by
0
Answer:
Total distance covered by car = 60 km
And, total time taken in journey t=t
1
+t
2
t=
v
1
s
1
+
v
2
s
2
=
60
30
+
40
30
=
4
5
h
Therefore, Average Speed=
Total Time
Total Distance
=
4
5
h
60km
=48 km/h
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