Question

A stone is dropped from the top of a 50m high building. What is its final velocity?

a) 0 m/s
b) -9.8 m/s
c) -14 m/s
d) -19.6 m/s

Answer 1

The final velocity of the stone dropped from the building is -19.6 m/s.

Step-by-step explanation:

The final velocity of a stone dropped from the top of a 50m high building can be determined using the formula:

Final velocity = sqrt(2 * g * h)

where g = acceleration due to gravity (approximately -9.8 m/s^2) and h = height of the building (50m in this case).

Substituting the given values into the formula:

Final velocity = sqrt(2 * -9.8 * 50) = -19.6 m/s

Therefore, the correct answer is d) -19.6 m/s.