Question

How much time would Simpson save by increasing his average velocity to 26m/s East?

Answer 1

8 minutes

Step-by-step explanation:

Part of the question is missing. Complete question is:

Simpson drives his car 144 km with an average velocity of 24 m/s toward the east. How much time would Simpson save by increasing his average velocity to 26m/s East?

Solution:

First of all, we have to calculate the time it takes for Simpson to complete the drive moving at the initial velocity, 24 m/s. We can use the formula:

`t=(d)/(v)`

where

`d=144 km = 1.44\cdot 10^5 m` is the displacement

`v=24 m/s` is the velocity

Substituting,

`t=(1.44\cdot 10^5)/(24)=6000 s = 100 min`

While driving at 26 m/s, the time taken will be

`t=(1.44\cdot 10^5)/(26)=5538 s=92 min`

So, Simpson will save 8 minutes.