Question

Cynthia skates across a frozen lake. The ice under her will crack if the pressure from her body exceeds 12,000 Pa. If she has a mass of 45 kg, what is the maximum area of contact that her skates can have with the ice if she does not want to fall through into the cold water? Use the conversion factor 1 kg = 10 N. Round your answer to the nearest thousandth. Enter your numerical answer into the blank provided. A = m²​

Answer 1

0.038m²

Write 0.038 as they want a numerical answer.

Step-by-step explanation:

Pressure = Force / Area

making area the subject of the formula we get

Area = Force / pressure

Force = mg

= 45 X 10

= 450N

Area = 450/12000

= 0.0375 m²

when we round off we get 0.038m²