can someone please help me?!?! I thought I had the answer to this problem, but it doesn't match the book's answer. I can't figure out what I'm doing wrong. This is the problem: A rocket is launched straight up with constant acceleration. 4 seconds after liftoff, a bolt falls off the rocket and hits the ground 6 seconds later. What was the rocket's acceleration? First, I used the free fall acceleration of the bolt, -9.80m/s2 and 6 seconds that if fell for to find its position when it fell off the rocket, which I found to be 176.4m. This would also be the height of the rocket when the bolt fell of. Since the rocket travelled for 4 sec to reach this height, I used this height and time to find the acceleration of the rocket, 22.05m/s2. The book answer however is 5.5 m/s2. What am I doing wrong?