Question

A skater with a mass of 60 kg is coasting on a frictionless surface. If the skater's speed is 8 m/s, what is the skater's kinetic energy?

7.5 J

240 J

480 J

1,920 J

Answer 1

Answer:1920J

Explanation: Kinetic energy formula is:1/2 mV^2=1/2*60*8^2=1920J

Answer 2

1920 J

Step-by-step explanation:

Given:

m = 60 kg

v = 8 m/s

`\boxed{E_k=(1)/(2) mv^2}`

`E_k=(1)/(2) (60)(8)^2`

`=1920\ J`