# Kinematics — projectile motion — time to maximum height?

**1. The problem statement, all variables and given/known data**

The nozzle of a fire hose discharges water at a speed of 10 m/s. The nozzle is aimed straight up. How long does it take for a water drop to reach its maximum height?

Start with translating the question:

vi= 10 m/s

vf= 0 m/s

t=? s

a= -9.8 m/s^2

delta−x= ?

**2. Relevant equations**

**3. The attempt at a solution**

OK, so I’m assuming that solving this takes 2 steps. One entails finding the maximum height, then using a kinematic formula to find time. Is that logic sound?

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