Answer:
0.25m²
Explanation:
We know that the summation of forces in the vertical direction is zero
So
PA-mg=0
A=mg/p
So
Substituting
A= 75* 9.8/3*10^-3
=0.25m² which is the total shoe area
Answer:
Total distance = 700 m
Displacement = 500 m
Explanation:
Notice that Jed travelled a total of 3 x 100 m = 300 m in the North direction, and 300 m + 100 m = 400 m in the East direction. Therefore the total distance he travelled is: 300 + 400 = 700 m.
But the actual displacement is given by the Pythagorean theorem as the hypotenuse of a right angle triangle of legs 300 m and 400 m:
displacement = ![\sqrt{300^2+400^2} =\sqrt{250000} =500\,m](https://tex.z-dn.net/?f=%5Csqrt%7B300%5E2%2B400%5E2%7D%20%3D%5Csqrt%7B250000%7D%20%3D500%5C%2Cm)
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