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TurboRuby6536

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how do i solve this it keeps saying that im doing it wrong?

Louis-Philippe B

Thank you for your question!

You must use the formula that calculates the total energy of an object, which includes both potential and kinetic energy:

$$ E_m = E_p + E_k $$

Legend:

• Em: total mechanical energy

• Ep: potential energy

• Ek: kinetic energy

$$ E_p = mgh $$

Legend:

• m: mass (kg)

• g: gravitational constant (=9.81)

• h: height (m)

$$ E_k = \frac{1}{2}mv^2 $$

Legend:

• v: speed (m/s)

This webpage of the Alloprof website explains potential and kinetic energy:

https://www.alloprof.qc.ca/en/students/vl/sciences/gravitational-potential-energy-and-kinetic-energy-s1098

Don't hesitate to ask for more help!