An 80-kg hiker climbs to the top of a tall hill and builds up 470,000 j of gravitational potential energy. how high did the hiker climb?

599.5 m

Explanation:

The gain in gravitational potential energy of the man is given by:

where

m is the man's mass

g is the gravitational acceleration

is the change in height of the hiket

In this problem, we have the following data:

U = 470,000 J

g = 9.8 m/s^2

m = 80 kg

Solving the formula for , we find:

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide