While unrealistic, we will examine the forces on a leg when one falls from a height by approximating the leg as a uniform cylinder of bone with a diameter of 2.3 cm and ignoring any shear forces. human bone can be compressed with approximately 1.7 × 108 n/m2 before breaking. a man with a mass of 80 kgfalls from a height of 6 m. assume his acceleration once he hits the ground is constant. for these calculations, g = 10 m/s2.

what is his speed just before he hits the ground?
what is his speed just before he hits the ground?
a. 880 m/s
b. 11 m/s
c.120 m/s
d.7.7 m/s

The correct answer is b 11 m/s

Explanation:

To solve this problem we can use mechanical energy. Let's write the energy at two points: initial at the highest point and end at the lowest point

Initial

    Em₀ = U

    Em₀ = m g y.

Final

    = K

      = ½ mv2

How mechanical energy is conserved because there is no friction

    Em₀ =  

    m g y = ½ m v²

    v = √ 2 g y

Let's calculate

    v = √( 2 10 6)

    v = 11 m / s

The correct answer is b 11 m/s

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation: