Question

An object is in freefall. It remains in freefall for 5 seconds before it hits the ground. How high was the object when it first started falling if its starting velocity was 0? (Acceleration due to gravity is -9.8 meters/second'2).

Answer 1

Resposta:

122,5 m

Explicação passo-a-passo:

$h=\frac{1}{2} gt^{2} \\ \Longrightarrow h=\frac{1}{2} \cdotp 9,8\cdotp 5^{2} \\ \Longrightarrow h=122,5\ m$