What is the velocity of a truck that is traveling 712 meters north in 890 seconds?

A.

642,240 m/s north
B.

642,240 m/s south
C.

0.80 m/s north
D.

0.80 m/s south

Answer :

blueyblue

Answer:

C. 0.80 m/s

Step-by-step explanation:

Firstly, you need to understand what velocity is, which is speed in a direction.

The equation for speed is:

Speed = Distance / Time

The units for which are:

m/s = metres / seconds

So, the first thing to do is to convert all the units so that they fit the ones used in the equation. However, since all the units in the question match the units used in the equation, there is no need for conversion.

Now you can find the speed: all you have to do is substitute the values given in the question into the equation.

s = d / t = 712 m / 890 s = 712/890 = 0.8 m/s

Once you've got the speed, you need to think about its direction so you can find its velocity. Luckily, the question already tells us here that it is traveling NORTH, so the answer must be 0.8 m/s north. If you look through the options, it would be C, as 0.80 is equal to 0.8 (they are the same number, just rounded to a different number of significant figures).

I hope this helps!

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