Question

Jeff, a snowboarder who weighs 1000 N, is practicing on a trampoline for an upcoming competition. As Jeff bounces straight up off the trampoline, his speed is 6.26 m/sec. When he reaches the top of his bounce, his potential energy is approximately:

Answer 1

Potential energy
`P_E = 2000 J`

Step-by-step explanation:

Given data

Weight of the person = 1000 N

Mass of the person =
`(1000)/(9.81) = 102 kg`

Speed = 6.26
`(m)/(s)`

Kinetic energy is given by

`E_K = (1)/(2) m v^(2)`

Put the values in above formula we get

`E_K = (1)/(2)(102) 6.26^(2)`

`E_K = 2000 J`

When the person reach top point then at this point the velocity is zero & kinetic energy at top point is equals to the potential energy.

Therefore potential energy

`P_E = 2000 J`