Question

Your text book is dropped off the desk 1.25 m above the floor. How long does it take the book to hit the floor?

Answer 1

0.505 s

Step-by-step explanation:

Given:

Δy = 1.25 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

(1.25 m) = (0 m/s) t + ½ (9.8 m/s²) t²

t = 0.505 s

Answer 2

Answer: 0.7 seconds

Step-by-step explanation: