If a toy rocket is launched vertically upward from ground level with an initial velocity of 128 ft./s, then its height H after T seconds is given by the equation h(t)= -256t + 128t (if air resistance is neglected). How long will it take for the rocket to return to the ground?

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.

7

step-by-step explanation:

2

step-by-step explanation:

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya