train and the time taken to cover a distance of 240m. 3. A car travels at a uniform speed of 30 kmph for 30 minutes and then at a uniform speed of 40 kmph for the next 40 min. Calculate the total distance travelled by car and its average speed.
Add an Answer
More Questions From This User See All
Answers & Comments
Explanation:
The total time for the journey is given as,
t=
v
1
d
1
+
v
2
d
2
=
40
30
+
20
30
=2.25hour
The average speed is given as,
v
avg
=
t
d
1
+d
2
=
2.25
30+30
=26.67km/h
Thus, the average speed of the car is 26.67km/h.
The total time for the journey is given as,
The total time for the journey is given as,t= v 1d 1 + v 2d 2
= 4030 + 2030
= 4030 + 2030=2.25hour
= 4030 + 2030=2.25hourThe average speed is given as,
= 4030 + 2030=2.25hourThe average speed is given as,avg= d 1 +d 2
= 2.25
= 2.2530+30
= 2.2530+30=26.67km/h
= 2.2530+30=26.67km/hThus, the average speed of the car is 26.67km/h.