On a 100 km track, a car travels the first 50 km with a uniform speed of 40 km/hr. How fast must the car travel the next 50 km so as to average 60 km/hr for the entire trip? (Answer should be in km/hr)
Answers
Answered by
1
Explanation:
9133577042 my what'sapp number
4301154259
Pas 1234
Answered by
0
Given: On a 100 km track, a car travels the first 50 km with a uniform speed of 40 km/hr.
To find: Speed with which the car travels the next 50 km so as to average 60 km/hr for the entire trip.
Solution:
- Average speed of the body is the total distance travelled by it divided by the total time taken.
- Here, the total distance is 100 km.
- The time taken to travel the first 50 km is calculated as,
- So, for the complete distance of 100 km, 2.5 hours are taken.
- Average speed is given by the formula,
- To find how fast must the car travel the next 50 km, the following formula is used,
- Here, x is the speed at which the car must travel for the next 50 km.
Therefore, the speed with which the car travels the next 50 km so as to average 60 km/hr for the entire trip is 40 km/hr.
Similar questions
Biology,
11 days ago
Math,
11 days ago
Social Sciences,
22 days ago
Physics,
22 days ago
Geography,
9 months ago