Question

8. What is the kinetic energy of the 80kg skydiver if he is moving at 60m/s?

Answer 1

Ek means kinetic energy
m is mass (kg)
v is velocity (m/s)

Ek= 1/2 m v^2
= 0.5*80kg*(60m/s)^2
= 144 000 J

Answer 2

Kinetic Energy =144000 Joules

Step-by-step explanation:

Hello, I can help you with this

In physics, the kinetic energy of a body is that energy it possesses due to its movement. It is defined as the work necessary to accelerate a body of a certain mass from rest to the indicated speed

and it is given by:

Kinetic Energy =
`(m*v^(2) )/(2)`

the units are

`(1 )/(2)Kg*(m^(2) )/(s^(2) ) =1\ Joule\\`

Step 1

define

mass=80kg

speed=60 m/s

Step 2

put the values into the equation

`E=(m*v^(2) )/(2)\\E=(80kg*((60m)/(s)) ^(2) )/(2)\\E=(80kg*((3600m)/(s^(2) )) )/(2)\\E=144000 Joules`

Have a good day.