(Solved): After solving a difficult physics problem, an excited student throws his book straight up. It leave ...

After solving a difficult physics problem, an excited student throws his book straight up. It leaves his hand at \( 3.9 \mathrm{~m} / \mathrm{s} \) from \( 1.5 \mathrm{~m} \) above the ground. How much time does it take until the book hits the floor? \( 2.605 \) \( 1.085 \) \( 0.405 \) \( 1.28 \)