adri

Well let me start with the question...

A mass m drops of from a height h (vertically). Calculate the speed at the bottom (1) and the kinetic energy (also at the bottom). (2)

Now this question is haunting me... Because normally I get exercises that are around one or two pages to solve and now I got this one, which I solved in two lines, so I'm really doubting my answer. I solved it as such:

Potential energy (Gravitational energy) = m*g*h = 10*m*h Because the potential energy changes in Kinetic energy, we can substitute those two...

Kinetic energy = (m*v^2)*0.5 = 10*m*h (2)

v = V(20*h) (1)

Now I'm really asking myself if it's correct, so I'm hoping someone can bring some light to this (easy) question.

adri

A mass m drops of from a height h (vertically). Calculate the speed at the bottom (1) and the kinetic energy (also at the bottom). (2)

Now this question is haunting me... Because normally I get exercises that are around one or two pages to solve and now I got this one, which I solved in two lines, so I'm really doubting my answer. I solved it as such:

Potential energy (Gravitational energy) = m*g*h = 10*m*h Because the potential energy changes in Kinetic energy, we can substitute those two...

Kinetic energy = (m*v^2)*0.5 = 10*m*h (2)

v = V(20*h) (1)

Now I'm really asking myself if it's correct, so I'm hoping someone can bring some light to this (easy) question.

adri