Mary weighs 450 N and she walks down a flight of stairs to a level 4.50 m below her starting point. What is the change in Mary's potential energy?
1 J
whats the PE formula? and setup?
1 answer
ΔPE = m•g•ΔH = 450•4.5 = 2025 J
1 J
whats the PE formula? and setup?
1 answer
0 answers
2 answers
1 answer
1 answer