A body is falling freely under gravity. How much distance does it fall during an interval of time between 1st and 2nd seconds of its motion, taking g=10?
Correct answer: B. 15m
- A. 10m
- B. 15m
- C. 20m
- D. 25m
Explanation
The formula to calculate the distance fallen under gravity is:Distance = 0.5 × acceleration due to gravity × time²Calculating Distance Fallen for Specific Time Intervals- For the 1st second: Distance = 0.5 × 10 × 1² = 5 m- For the 2nd second: Distance = 0.5 × 10 × 2² = 20 mTotal Distance Fallen between 1st and 3rd SecondsTo find the total distance fallen between the 1st and 3rd seconds:Total Distance = Distance at 2nd second - Distance at 1st second Total Distance = 20 m - 5 m = 15 mThe correct distance fallen between the 1st and 3rd seconds, considering g = 10 m/s², is 15 m.
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