1.An 80 kg firefighter climbs the stairs to the roof of a 20 m high building. what is the increase in potential energy.
2. A 100 kg mountaineer climbs a 30 m high mountain. what is its increase in potential energy.
SOS!!!

in physics zero. in muscle fatigue could be high

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles