Posted by Han on .
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,
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 highjumpers put the body to a slant or even horizontal at the critical moment.