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.

5) A ball is thrown straight up in the air. When the ball reaches its highest point, which of the following is true?

(A) It is in equilibrium.

(B) It has zero acceleration.

(C) It has maximum momentum.

(D) It has maximum kinetic energy.

(E) None of the above