A bullet is fired upward with a speed v₀from the edge of a cliff of height h (Fig. P3.22).

(a) What is the speed of the bullet when it passes by the cliff on its way down? 

(b) What is the speed of the bullet just before it strikes the ground? 

(c) If the bullet is instead fired downward with the same initial speed v₀, what is its speed just before it strikes the ground? Express your answers in terms of v₀, h, and g. Ignore air drag. Assume the bullet is fired straight up in (a) and (b) and straight down in (c).

Figure P3.22

Transcribed Image Text:

vo