A body is dropped from a height. If it falls for 3.0 s and g = 10 m/s2, its final velocity (v) is ______________.
Correct Answer :
30 m/s
Solution :
The correct answer is 30 m/s.
Step-by-step Explanation:
1. Identify the given values:
• Initial velocity (u) = 0 m/s (since the body is dropped from rest)
• Time taken (t) = 3.0 s
• Acceleration due to gravity (g) = 10 m/s2
2. Formula:
We use the first equation of motion under gravity:
3. Calculation:
Substitute the given values into the equation:
Therefore, the final velocity of the body after falling for 3.0 seconds is 30 m/s.
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