A motorist travelling at 72\(kmh^{-1}\) had his eyes shut for 0.4s during a hard sneeze. Calculate the distance covered by him during this time interval.
Question 1 Report
A motorist travelling at 72\(kmh^{-1}\) had his eyes shut for 0.4s during a hard sneeze. Calculate the distance covered by him during this time interval.
Answer Details
The distance covered by the motorist can be calculated using the formula:
distance = speed x time
We are given that the speed of the motorist is 72 km/h, but we need to convert it to meters per second (m/s) to be consistent with the time interval given in seconds.
1 km/h = 0.27778 m/s (approx.)
So,
speed = 72 km/h x 0.27778 m/s/km/h = 20 m/s (approx.)
The time interval given is 0.4 s.
Putting these values in the formula:
distance = speed x time
distance = 20 m/s x 0.4 s = 8 m (approx.)
Therefore, the distance covered by the motorist during the 0.4s with eyes shut is approximately 8 meters.
Hence, the correct option is (D) 8.0m.
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