Question

On a trolley ride around an amusement park, a child traveled from one signpost to a second signpost at a constant speed of 125 meters per minute. Was the distance that the child traveled from the first signpost to the second signpost greater than 0.8 kilometer? (1 kilometer = 1,000 meters)

Answer 1

Question

It took less than 450 seconds for the child to travel from the first signpost to the second signpost.

Answer:

Yes, the child took less than 450 seconds for the child to travel from the first signpost to the second signpost

Explanation:

$Speed=\frac {125}{60}=2.083333333 m/s\approx 2.083 m/s$

Distance=speed* time

Distance=2.083*450=937.5 m=0.9375 Km

For the child to travel 800 m, it required only $\frac {800}{2.083}=384 seconds$

Therefore, it's proper to conclude that it took less than 450 seconds for the child to travel from the first signpost to the second signpost.