Help with my Mechanics Question!! Watch
Find the length of time for which the rocket is more than 88.2m above the ground.
I keep getting 49/11 s but the answers 7s. Anyone know how to get 7s?
also, is it the length of time that the rocket is above 88.2m? as in, it goes up then down?
put in a suitable value for h and solve quadratically. the difference between your two values of t should be 7 seconds.
U = initial velocity = takeoff velocity of the system (rocket) = 53.9
You’re given everything except the final velocity. Use suvat