Answer:
Explanation:
Explanation
PE = mgh
The mass once stated, cannot be altered. You cannot decide that 1/2 down its fall, it becomes 25 kg. The mass is fixed once it has a value.
g for your intents is a constant.
h is the only thing you can change.
Givens
m = 10 kg
g = 9.81 m/s^2
h = 30 m
Solution
PE = m*g*h Substitute the givens into the equation
PE = 10 * 9.81 * 30
PE = 2943 Joules
Note a Joule is made of Kg m^2/sec^2
