Question

question 9 (1 point) saved an auto manufacturer advertises that their car can go \from zero to sixty in eight seconds.\ this is a description of what characteristic of the car’s motion? a) instantaneous speed b) instantaneous acceleration c) average speed d) displacement e) none of the above.

Explanation:

• Option a: Instantaneous speed is the speed at a specific instant, not related to the change over 8 seconds.
• Option b: Instantaneous acceleration is acceleration at a specific instant, while "zero to sixty in eight seconds" is about average acceleration (change in velocity over time), not instantaneous.
• Option c: Average speed is total distance over total time, but here we have a change in velocity (from 0 to 60) over time, not distance.
• Option d: Displacement is a change in position, not related to velocity change over time.
• The correct concept here is average acceleration (change in velocity $\Delta v = 60 - 0$ over time $\Delta t = 8$ s, $a=\frac{\Delta v}{\Delta t}$), which is not listed in a - d, so e is correct.

Answer:

e) None of the above.