4/12/11

Post date: Apr 13, 2011 1:40:6 PM

- Bell Ringer: A 1.25 kg model rocked uses 5950 J or fuel to launch. A moment later, it is 148 meters high and travelling at 4.8 m/s. How much of the initial energy became heat, light, and sound? What is the efficiency of the rocket?
- Finish building rockets (launching tomorrow)