Recent content by JohnCy

I think I'm following you. For example, would my v_1= 4a? my Y_1=8a? Am I on the right track?

I set up an event diagram with 4 events. Y_0 is launch, Y_1 is bolt falling off, Y_2 is engine failure, and Y_3 is max altitude. To calculate the distance between Y_0 and Y_1 I used the time it took for the bolt to hit the ground (8s). Y_1= .5(-9.8)(8)^2=313.6m Then to find the acceleration I...

Homework Statement A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the rocket. The bolt hits the ground 8 seconds later. Three seconds after the bolt falls off, the rocket's engines fail. How high does the rocket go before it begins...

Thanks for both your help guys. I've been doing physics for all of three weeks now and it doesn't seem to be getting easier. Sorry for the messy equations. I tried to use latex but apparently it didn't work. Thanks again!

I don't know the velocity at 18 seconds. All the initial values are given, they are all zero. The only intermediate value given is 18 seconds. That's why I'm having a difficult time, I'm not sure how to handle all the unknowns. I'm trying to draw some equations from the three graphs I drew but...

Homework Statement A weather rocket is launched straight upwards. The motor provides a constant acceleration for 18s, then the motor stops. The rocket altitude after 26s after launch is 5800m. What was the rocket's acceleration during the first 18 seconds? Homework Equations [ tex ]x =...