- #1

7yler

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**What was the particle's launch speed?**

**If the particle was launched at a different angle, but fell 0.5m short, what would it's launch angle be?**

For the first part, I figured that the launch speed should be x, where x*cos(14 deg) = 15.4 m, so x = 16 m/s, but this is not correct. Why?