I know the answer but can you work this?
2 km/hr * (2000 m/km) * (1 hr/60 min) = 33.333 m/min
length
33.333 m/min * 0.4 m = 13.3332 m²/min
So the mower is mowing 13.3332 m²/min
From a google search, "The rectangular field is 160 feet (48.5 m)
wide and 360 feet (109.1 m) in length (53.3 yards, 120 yards
respectively), including the two 10 yard (9.2 m) end zones."
So a football field (including the end zones), has an area of 48.5
* 109.1 = 5,291.35 m²
Time require to mow would be 5291.35/13.3332 = 396.855 mins =
6.61425
I know the answer but can you work this? Constants Periodic Table PartA Estimate how long...
29. (II) Estimate how long it would take one person to mow a football field using an ordinary home lawn mower (Fig. 1-15). (State your assumption, such as the mower moves with a 1-km/h speed, and has a 0.5-m width.) 5 0 FIGURE 1-15 Problem 29.
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