9. Which is an example of acceleration? *
A. A pickup driving 30 km in 20 minutes.
B. A car slowing down on a sharp curve.
C. An airplane traveling 450 km/h.
D. An 18 wheeler driving west at 50 km/h
I really need help on this question 😅
acceleration is a change in velocity.
So, what do you think?
Mr.Oobleck?
NO! You want a change in velocity -- slow down, speed up, or change direction. Stop guessing and think about it.
Okay. My bad. B velocity is change right?
Thanks for the help
To determine which option is an example of acceleration, we need to understand what acceleration means. Acceleration is the rate at which an object changes its velocity over time. It can be calculated by dividing the change in velocity by the time taken.
Option A: A pickup driving 30 km in 20 minutes.
To determine if this is an example of acceleration, we need to know the velocity before and after the 20-minute timeframe. If the velocity increases or decreases during this time, it would be an example of acceleration.
Option B: A car slowing down on a sharp curve.
When a car slows down, its velocity decreases. Since acceleration is defined as a change in velocity, this option could be an example of acceleration.
Option C: An airplane traveling 450 km/h.
Without additional information, it is difficult to determine if this is an example of acceleration. Since there is no mention of the velocity changing, it is not conclusive whether this option represents acceleration.
Option D: An 18-wheeler driving west at 50 km/h.
Similar to option C, without additional information, it is challenging to determine if this represents acceleration. Since there is no information given about any change in velocity, it cannot be determined with certainty.
Based on the information given, option B, "A car slowing down on a sharp curve," is most likely an example of acceleration. When a car slows down, its velocity decreases, indicating a change in velocity and therefore acceleration.