Recent content by robair

well i actually asked my physics teacher and he said i got A right so acceleration is 30.2 but i got B and C wrong... he gave me the right answers for B (246m) and C (8.15s) so the thing right now is to figure out what i did wrong in B and C

well because in the question it gives you impulse...

can some one just check my work please Homework Statement model rocket of mass .250 kg is launched vertically with an engine that is ignited at time= 0, the engine provides 20 N.s impulse by firing for 2 sec . upon reaching its maximum height the rocket deploys a parachute and then desends...