At the lowest point in the jump when the student is stationary, the extension of the bungee cord is 35 metres.
the bungee cord behaves like a spring with a spring constant of 40 n / m.
calculate the energy stored in the stretched bungee cord.
use the correct equation from the physics equations sheet.
me - need the answer and sum

When it is released,let say elongation at mean point is x. So at maximum elongation it'll become 2x. So 2x=35. x= 17.5m. Now energy stored in the stretched bungee cord is E= 1/2 kx^2.( k= 40N/m ). E= 1/2 x 40 x (17.5)^2 = 6125J. Hope it helps.

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.

If your workout exceeds an hour you should substitute "a sports drink" for water.hope my answer has you : )