Answer:
10.2 m
Step-by-step explanation:
The formula for potential energy is
PE=mgh
Let's plug in the given values into the equation
300 J = 3.00 kg*9.8m/s²*h
We're assuming that the object is on Earth and has a gravitational acceleration of 9.8m/s²
300J = 29.4 N * h
h = 10.2 m