How much potential energy does a 60kg skater have before she starts her ride, 12m above the ground?
To calculate the potential energy of the skater, we can use the formula:
Potential energy = mass × gravity × height
In this case, the mass of the skater is given as 60 kg, the height is 12 m, and gravity is approximately 9.8 m/s^2.
So, plugging the values into the formula:
Potential energy = 60 kg × 9.8 m/s^2 × 12 m
Now, let's calculate the answer:
Potential energy = 7056 J (Joules)
Therefore, the skater has 7056 Joules of potential energy before starting her ride.