My boyfriend asked me to make a math problem for him so I did... I don't know the answer

for sure, just wrote the question.

I was hoping someone could solve it on here, to let us know who was closer to the answer.

It might even be unsolvable... I'm not positive. :P

This is the question:

If a plane is landing and it has 1,858 metres before it has to stop/park the plane, and at the

beginning of landing it is going 80km/hr, how many km per 5 seconds does the plane have to

decrease speed?

This is my work:

The plane will park in 83.4 seconds:

80,000m/60min = 1,333.33m/min.

1,858m/1,333.33m = 1.39min

1.39min = 83.4 seconds

The plane is going 22.22m/second:

1,333.33m/60 seconds = 22.22m/1second.

The plane has to decrease its speed 16.68 times:

83.4/5 seconds = 16.68.

I don't really know where to go from here. :P

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