A car travels 20 km in first hour, 40km in second hour and 30km in third hour.calculate the average speed of the tructh
Answers
Answer:
45 km
Explanation:
Distance in first hour = 20 km
Distance in second hour = 40 km
Distance in third hour = 30 km
.°. Average distance
= 20 + 30 +40/2
= 90/2
= 45
.°. Average distance is 45 km
Concept
The overall distance travelled by the object in a given time frame is the average speed.
Given,
20 km, 40 km, and 30 km are the distances travelled by car.
Time required = 3 hours
To find
Determine the car's average speed.
Solution
The formula for calculating the car's average speed is the solution.
Total distance/Total time = Average speed
In the previous question,
The car's total distance travelled is 20+40+30 = 90 km.
Total time required: 3 hours
Now,
90/3 = average speed
30 km/hr average speed
As a result, the car's average speed is 30 km/hr.