Question

click and drag on elements in order a student driver is having trouble maintaining constant pressure on the pedals and is driving a very \jerky\ manner. arrange the following instances of acceleration from greatest to least in terms of change in velocity. each change in velocity happens over a 1 second period of time. instructions from 5 mph to 20 mph from 39 mph to 40 mph from 5 mph to 10 mph from 10 mph to 20 mph

Explanation:

Step1: Calculate acceleration for each case

Acceleration formula: $a = \frac{\Delta v}{t}$, where $\Delta v = v_f - v_i$, $t=1$ sec.

• Case1: $\Delta v=20-5=15$ mph, $a_1=\frac{15}{1}=15$ mph/s
• Case2: $\Delta v=10-5=5$ mph, $a_2=\frac{5}{1}=5$ mph/s
• Case3: $\Delta v=40-39=1$ mph, $a_3=\frac{1}{1}=1$ mph/s
• Case4: $\Delta v=20-10=10$ mph, $a_4=\frac{10}{1}=10$ mph/s

Step2: Sort accelerations descending

Compare values: $15 > 10 > 5 > 1$

Answer:

1. From 5 mph to 20 mph
2. From 10 mph to 20 mph
3. From 5 mph to 10 mph
4. From 39 mph to 40 mph