A jogger is running at a speed of 15 km/hr. In what time he will cross a track of length 400 meters?A)100sB)87sC)96sD)45s
Question
A jogger is running at a speed of 15 km/hr. In what time he will cross a track of length 400 meters?A)100sB)87sC)96sD)45s
Solution
To solve this problem, we first need to convert the speed from km/hr to m/s. We know that 1 km = 1000 m and 1 hr = 3600 s. So, 15 km/hr = 15 * (1000/3600) m/s = 4.17 m/s.
Next, we use the formula time = distance/speed to find out how long it takes for the jogger to cross the track. So, time = 400 m / 4.17 m/s = 95.92 s.
Therefore, the closest answer is C) 96s.
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