Simple Physics question? Just want to be sure?

Question

If joe rides south on his bike in a straight line for 15 min with an average speed of 12.5 km/h how far has he ridden?

is the answer 50km or -50km? Is it -50km because of joe going down south?

or is -12.5 km/h

Answer 1

Distance is a vector quantity so all distances are positive in response to a question like this.

Answer 2

Joe is traveling at a speed of 12.5 km per hour. But, we are asked how far he traveled in 15 minutes. 15 minutes is 1/4 of an hour. So the answer is (12.5)/4 or 3.125 km. The answer is positive because we are asked how far he has ridden, and distance cannot be negative.

Answer 3

Direction has nothing to do with this answer. He rode for 15 minutes (1/4 of an hour) at a rate of 12.5km/hr. So you divide 12.5 by 4=3.125 km. The answer is approximate because the rate was an "average speed"...meaning he could have gone slower or faster during the 15 minutes.

Answer 4

What a gaggle of horse dung! fairly! How does Heisenberg uncertainty theory (which style of states that as quickly as you pinpoint an electron as to the place it extremely is you could now no longer tell the place it is going and in case you already know the place it is going you could no longer tell the place it extremely is.) have something to do with the universe being undetermined and random? The uncertainty isn't that this is random or undetermined the uncertainty is which you will no longer understand the the place it extremely is and the place it is going on the comparable time, yet those are the two parts that is had at separate situations. how are you able to logically bounce from electrons to the universe? If what you're saying is genuine and electrons are random and consequently the universe is then that randomness turns right into a trend and not something interior the universe could make any sense. like the improbability force on Zaphod's spaceship interior the Hitchhikers handbook if issues are extremely random then whales could be appearing in mid air and crashing to the earth. additionally your Schrodinger equation this could be a quantum theory of ways a photon (mild waves) can function as a particle and a as a wave on the comparable time. alongside with this concept you have over a dozen greater that are contradictory to Schrodinger's and yet answer the comparable undertaking. So how does that disprove there's a God? It does not clarify the place the photons got here from interior the 1st place, it does not clarify the life of self, will, morals, supernatural, etc. fairly throwing up this vomit is fairly detrimental. purely via fact maximum Christians do no longer understand quantum physics, and in case you published this you for sure do no longer the two.

Answer 5

Joe has ridden 3.125 km.

If he rode for 1 hour at 12.5 Km/h we would have covered 12.5 Km.

So!- if he only rode for 15 min. (one quarter of an hour) just take 1 quarter of 12.5 to get the distance he rode.

It does not matter which direction he went or even if he rode backward it would still be 3.125 Km travelled.

Answer 6

honey, its not 50 km!

12.5 km/h would be 12.5/60 = 0.208 km/min.
Now he rides for 15 minutes, so he would have travelled
0.208 * 15 = 3.12 kms

Answer 7

The answer is 3.125 km. The direction doesn't matter, the answer will never be negative.

Answer 8

Its just 12.5 divided by 4 mate (3.125km).

I'm not sure where you're getting the - from.

Answer 9

Just accept the fact that joe likes it down south. I have! :-)

Answer 10

jay p got it right, give him the points. north and south are relative directions. your answer would only be negitive if you set north as the positve quad of your grid.