5. As a science fair project, you want to launch an 800g model rocket straight up and hit a horizontally moving targer as it passes 30 m above the launch point. the rockey engine provides a constant thrust of 15.0N. The target is approaching at a speed of 15m/s. At what horizontal distance between the target and the rocket should you launch(adsbygoogle = window.adsbygoogle || []).push({});

known:

change in x of rocket=change in y of target=0 m

change in y of rocket=30m

mass of rocket=800g=.800kg

Force applied to rocket in x direction=0 N

Force applied to rocket in y direction=15.0 N

velocity of target in x direction=15 m/s

F1y=15.0 N=ma1y

15.0=(.800)a1y

18.8=a1y

This is about as far as I have gotten. How do I make my way to finding the horizontal distance?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Dynamics Problem in two dimensions

**Physics Forums | Science Articles, Homework Help, Discussion**