A 102 kg student on the track team has been training to try and match Usain Bolt's World Record. Usain Bolt completed the 100m dash in 9.58 s. His mass is 96 kg. What kinetic energy would the student need to match Usain Bolt's kinetic energy? What would the student's speed have to be to match that record? I​

Anybody wanna ? (picture included? )

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?