Correct option is B
The Correct Answer is: (b) 20 m/s
Explanation:
Given:
Given:
Initial velocity, u = 0 m/s (since it starts from rest)
Time, t = 2 seconds
Acceleration due to gravity, g = 10 m/s²
Final velocity, v = ?
We use the first equation of motion:
v=u+gtv = u + gt v=u+gt
Substitute values:
v=0+(10×2)=20m/sv = 0 + (10 \times 2) = 20 \, \text{m/s}v=0+(10×2)=20m/s
So, the final velocity of the body when it reaches the ground is 20 m/s.
Information Booster:
• Free fall refers to motion of an object under the influence of gravity alone.
• The object accelerates uniformly at g = 9.8 or 10 m/s² near the Earth’s surface.
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