Posted by **Han** on Sunday, June 15, 2014 at 12:20am.

Assuming the best high jump record from a standingposition in a school was 1.52 m, what initial velocity was needed for this jump? Neglect any sideways motion.

- Physics -
**MathMate**, Sunday, June 15, 2014 at 7:25am
The *minimum* initial velocity will create at least the kinetic energy (1/2)mv² to equal the potential energy gained, mgh, where h is the height difference between the horizontal rod and the cg of the person from the ground.

Make assumptions to the value of this difference, knowing that most high-jumpers put the body to a slant or even horizontal at the critical moment.

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