Question

A young diver is practicing his skills before an important team competition. Use the diagram below in order to analyze the energies of the diver and complete the statements below.

Where m = mass (kg), g = 9.8 m/s2, v = velocity (m/s), h = height (m), KE = kinetic energy (J), and GPE = gravitational potential energy (J).
Use the equations above to answer the following questions.

A diver with a mass of 90 kg is at a height of 10 m, and he has not jumped off of the board yet (v = 0 m/s). When the diver reaches a height of 5 m (Point C), his gravitational potential energy is

A. 1350 J

B. 8820 J

C. 4410 J

D. 0 J

and his velocity is

E. 4.5 m/s

F. 0 m/s

G. 3.2 m/s

H. 9.9 m/s

Please help will mark brainliest

Answer 1

• h=10m-5m=5m
• m=90Kg
• g=9.8m/s^2

$\\ \sf\longmapsto GPE=mgh$

$\\ \sf\longmapsto GPE=90(5)(9.8)$

$\\ \sf\longmapsto G PE=4410J$

Now

It's converted to kinetic energy while reaching ground.

$\\ \sf\longmapsto K.E=4410$

$\\ \sf\longmapsto \dfrac{1}{2}mv^2=4410$

$\\ \sf\longmapsto 90v^2=8820$

$\\ \sf\longmapsto v^2=98$

$\\ \sf\longmapsto v=9.9m/s$

Done

Answer 2

Answer:

Hope it will help you a lot.