Gravitation force

Question

1kg mass freely falling in downward direction from 100m height at south pole which mean gravity value is 9.863g/m2 what is velocity of mass when falling and hit no bouncing area and speed of mass when falling.

Answer 1

We use conservation of energy here:

Kinetic energy = Potential energy

(1/2)mV² = mgh (m cancels)

(1/2)V² = gh

V² = 2gh

V = sqrt (2gh)

V = sqrt (2 x 9.863 x 100)

V = 44.4139 m/s