In a race, an athlete covers a distance of 312 m in 156 sec in the first lap. He covers the second lap of the same length in 52 sec. What is the average speed (in m/sec) of the athlete?
Given:
Distance covered in each lap = 312 m
Time for the first lap = 156 sec
Time for the second lap = 52 sec
Formula Used:
Average speed =
Solution:
Total distance = Distance of first lap + Distance of second lap
Total distance = 312 m + 312 m = 624 m
Total time = Time for first lap + Time for second lap
Total time = 156 sec + 52 sec = 208 sec
Average speed = 3 m/sec
The average speed of the athlete is 3 m/sec.
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On a 300 km long racing track, three bikes — A, B, and C take part in a race. Initially, their speeds are 50 km/hr for Bike A, 40 km/hr for Bike B, and 60 km/hr for Bike C. After the first 2 hours of racing, their speeds are altered as follows:
Bike A adopts a new speed which is 25% more than Bike C’s speed at that moment.
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Bike C reduces its speed to 80% of Bike A’s original speed.
Find the time gap (in minutes) between the bikes that finished first and second.
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In a race, an athlete covers a distance of 312 m in 156 sec in the first lap. He covers the second lap of the same length in 52 sec. What is the average speed (in m/sec) of the athlete?
P can complete a round of circular track in 1 minute and 30 seconds while Q can complete a round in 45 seconds. If they start moving from the same point and move in opposite directions, then they meet after _____ seconds.
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