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Question:
A coin released at rest from the top of a tower hits the ground after falling 1.5 s. What is the speed of the coin as it hits the ground?
Answer:
The speed of coin as it hits the ground is 14.7 m/s.
Given data:
Initial speed of coin is, .
Time taken to fall on ground is, .
Use first kinematic equation of motion as,
here, g is the gravitational acceleration.
Solving as,
Thus, the speed of coin as it hits the ground is 14.7 m/s.
Learn more about kinematic equation of motion here:
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