<span>Friction
can help us play tennis, knock down bowling pins, and cook dinner.</span>
Trips/slips/falls are among the most common types of work related injuries and/or deaths.
Well they could go down a hill to gain more kinetic energy.
Answer:
Work done.
Explanation:
The skater who lifts has to overcome the partner's weight. When lifted up by 1 meter, her potential energy increases by (mass)x(gravitational acceleration)x(1meter), which is the amount of work done.
(This all assumes lifting vertically and no other forces being part of the picture)
