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.

Examples:

1. How fast do you need to throw a baseball above you in order to get it to travel 50 meters high?