Free Fall

• Object dropped V_y0=0 m/s
• A_y always -9.8 m/s² (- 10 m/s² for some instructors)
• Object thrown down some initial velocity same acceleration (-9.8 m/s²)
• Object thrown up: some initial velocity (V_y0), acceleration: -9.8 m/s², velocity attop of flight is0 m/s
• Time to goup to max height isequal to time to comedown from it.

3) A model rocket is launched from rest and its engine delivers a constant acceleration of 8.2 m/s² for 5 seconds, after which the fuel is used up. Assuming the rocket was launched straight up into the air:

A) How fast is the rocket going once the fuel is used up?

B) Find the maximum altitude reached by the rocket.