Estimate how long it would take one person to mow a football field using an ordinary home lawn mower. Assume the mower moves with a 1 km/h speed, and has a 0.6 m width

t = 11.9 h = 0.49 day

Explanation:

First of all, we will find the area covered by the mower per unit time:

where,

v = speed of mower = 1 km/h = 1000 m/h

w = width of mower = 0.6 m

Therefore,

Now, the standard football ground has an area of:

A = 105 m x 68 m = 7140 m²

Therefore, The time required to mow the lawn will be:

t = 11.9 h = 0.49 day

80cm/s.

24cm/s.

53.3cm/s.