A car moves at a speed of 30 km/hr for 20 minutes and then at speed of 50 km/hr for next 20 minutes. Calcuate total distance
Answers
Answered by
0
Answer:
distance =speed×time
it's relative speed =50-30=20km/hr.
=20×20=400km
distance travelled by car is 400 km
Answered by
0
Answer:
53333.33 km.
Explanation:
We know that, Total Speed = Total Distance / Total Time.
Then the total speed = The final speed + The initial speed.
The initial speed = 30 km/hr
The final speed = 50 km/hr
Then,
By The Problem;
Total Speed = (50 + 30) km/hr.
= 80 KM/hr.
= (80 x 5/18) m/s
= 200/9 m/s
Total time = {(20 x 60) + (20 x 60)} sec.
= (1200 +1200) sec.
= 2400 sec.
(Then by putting the values.)
200/9 = Distance / 2400
= 200 x 2400 = Distance x 9 (By cross - Multiplication method.)
= 480000/ 9 = Distance
Therefore, The Total Distance covered is 53333.33 km (approx.)
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