A beach ball is thrown straight up in the air. The graph shows its vertical velocity component as a function of time. The dashed line is tangent to the curve at the point where vy = 0. 

(a) What shape would the vy(t) graph have if air drag on the beach ball were always negligibly small? 

(b) Describe feature(s) of the vy(t) graph that tell you that the force of air drag on the ball is not negligible. 

(c) Describe feature(s) of the graph that indicate that the buoyant force on the ball is significant.

 

Transcribed Image Text:

Vertical velocity of beach ball as a function of time , (m/s)4 1.5 0.5 0. 4 t(s) -0.5 -1 -1.5 3. 2.