Suppose the object in Figure 11.8 is in accelerated circular motion, so that (left|vec{v}_{mathrm{f}} ight|>left|vec{v}_{mathrm{i}} ight|). In

Suppose the object in Figure 11.8 is in accelerated circular motion, so that \(\left|\vec{v}_{\mathrm{f}}\right|>\left|\vec{v}_{\mathrm{i}}\right|\). In which direction does the object's average acceleration point?

Transcribed Image Text:

Figure 11.8 Average and instantaneous acceleration of an object in circular motion at constant speed. (a) (b) Puck accelerates because its To find puck's average acceleration: velocity changes direction. 0 7 Shaded triangles are similar. a has same direction as change in velocity.. A - 15 - av (c) As time interval approaches zero, average acceleration approaches instantaneous acceleration. Instantaneous acceleration is perpendicular to v