Classes are canceled due to snow, so you take advantage of the extra time to conduct some physics experiments. You fasten a larg

1) 9.18 s

During the initial phase, the rocket accelerates at

over a time interval of

The final velocity after this period is found using the SUVAT formula:

with initial velocity u = 0. Substituting a1 and t1 gives:

Afterward, the rocket decelerates uniformly at

until it stops, meaning the final velocity is

Again using the SUVAT formula,

and knowing , solve for t2, the time until the rocket halts:

2) 299.9 m

Calculate distances covered in both phases.

Distance in the first phase:

Substituting values from part 1,

Distance in the deceleration phase:

Substituting known values,

Total distance traveled is

d = 82.7 m + 217.2 m = 299.9 m