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Excellent human jumpers can leap straight up to a height of 100 cm off the ground. to reach this height with what speed would a person need to leave the ground?
1 Answer
- Anonymous7 years agoFavorite Answer
Given:
Height, g = 100 cm
Solution:
This problem can be solved using the conservation of energy principle. According to this principle,
Energy at lost = energy gained
or
Potential energy at the ground = Kinetic energy spent to jump
So, m*g*h = 1/2*m*v^2
Mass of the jumper remains the same. So,
g*h=1/2*v^2
v = sqrt(2gh)
v = sqrt(2*9.8 m/s^2*100 cm * 10^-2 m)
v = 4.43 m/s