Simpson drives his car with an average velocity of 48.0 km/h to the east. How long will it take him to drive 144 km on a straight highway? Step by Step? Equation?

Question

anonymous · Answer

V avg =$$\Delta X/\Delta T$$

anonymous · Answer

Help please!!!!

anonymous · Answer

To find the travel time, divide the distance by the speed. In this case, divide 144km by 48 km/have to get an answer in hours.

anonymous · Answer

*km/h

anonymous · Answer

but i have to use the equation above

anonymous · Answer

Alrighty, then let's look at that. 
V_avg=48 km/h, that's given. Delta X is the change in position (144 km). Delta T is the answer you need.

anonymous · Answer

Can you rearrange the formula to get Delta T on top, by itself on one side of the equals sign?

anonymous · Answer

Delta T=?

anonymous · Answer

Delta T = 144/48

anonymous · Answer

That's correct! The formula rearrange to Delta T= Delta X / V_avg = 144 km / 48 km/h

anonymous · Answer

oh ok so i can just switch it like that?

anonymous · Answer

As long as you follow the rules of algebra, you can rearrange pretty much any formula like that.

anonymous · Answer

oh ok thank you so much

anonymous · Answer

You're welcome!