The graph below shows the altitude, in feet, of a model rocket t seconds after launch. During this time, the rocket
experiences three distinct modes of flight. Initially, the engine accelerates the rocket upward. The rocket then coasts upward,
is slowed by gravity, and eventually begins to fall. Last, a parachute opens and the rocket drifts smoothly back to the ground.
When was the model rocket 600 feet above the ground?
4.5 seconds
0 7 seconds
7 and 9.5 seconds
4.5 and 12 seconds

ASAP

In which source of water would a wave travel the fastest? o ice o cold o room temperature o hot mark this and return save and exit next

Identify the number 127 as a rational or irrational. explain

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)