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**1. Homework Statement**

A 1000 kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 14 s, then the motor stops. The rocket altitude 18 s after launch is 5000 m. You can ignore any effects of air resistance.

(a) What was the rocket's acceleration during the first 14 _______m/s^2?

(b) What is the rocket's speed as it passes through a cloud 5000 m above the ground?

______m/s

**2. Homework Equations**

Tried using the kinematic equations

**3. The Attempt at a Solution**

i dont understand how you can apply the kinematic equations when you dont know the acceleration, it just says it was constant. i know whatever acceleration it is, it is going to be minused from the gravitational acceleration, and you can use the t=14 and t=18 and the x=5000m at t=18. My teacher told me to draw a graph and interpret it, or use the kinematic equations multiple times. Any help would be greatly appreciated.