Question #a4a88
1 Answer
Explanation:
I will being using 'uvast' eqautions to solve this, I suggest you look that up online (Also commonly called SUVAT) if you are not familiar with it.
we know that
we know that
we know that
Firstly, all values should be in the standard units (metres, seconds, etc.) so we have to convert
80km/h =
A kilometre is 1000m long and there is 80 of them.
An hour has 60 minutes, each minute containing 60 seconds.
Therefore
We want it in the format metres per 1 second, so we must divide both sides by 3600 to get this 1 second.
If you put
I recommend not changing it to a decimal and instead just simplifying it to
Now we know that
It is hard to tell if the question is looking for the distance that the car will have traveled or the time that it will have taken because it just says "how long will it have traveled by the time.."
If you want the time taken, you want to find the value for
using the equation
fill in our known values and get
if you want the distance traveled you are looking for