Question

How much initial kinetic energy is required for the athlete to clear a high jump bar set at 2 m?
(7 marks)

Height: 1.60 m Length of each arm: 0.60 m
Mass: 75 kg Mass of each leg: 12 kg
Length of each leg: 0.75 m Mass of each arm: 4 kg

Assume that the mass in the arms and legs is uniformly distributed.

Answer 1

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kinetic energy = potential energy of that athlete at height of 2 m

now ,

$p = m \times g \times h$

$= m \times 9.8 \times 2$

so required K.E. is 19.6 m

where m is the mass.

hope it help❣

Answer 2

$hey$

Step-by-step explanation:

We Have,

g=9.8 we known

H=2m

Kinetic energy= potential energy

potential energy of thet athletes at heights of 2 m,..

NOW,

formula

P= m×g×h

putting tha value

potential energy= m×9.8×2

So, required kinetic energy is 19 .6 m