Answer:
2000 Joules.
Step-by-step explanation:
To calculate the kinetic energy of a 40 kg skater traveling at a speed of 10 m/s, we can use the equation:
KE = 0.5 • m • v²
Where:
KE = kinetic energy
m = mass (in kg)
v = velocity (in m/s)
Substituting the given values into the equation:
KE = 0.5 • 40 kg • (10 m/s)²
KE = 0.5 x 40 kg x 100 m²/s²
KE = 2000 Joules
So, the kinetic energy of a 40 kg skater traveling at a speed of 10 m/s is 2000 Joules.