Which everyday observation illustrates the concept of friction reducing motion efficiency?
A
A ball bouncing higher each time
B
Rubbing hands together to generate heat
C
Water boiling faster at high altitude
D
Light bending through a prism
Correct Answer: Option B — Rubbing hands together to generate heat
Explanation:
Rubbing hands together to generate heat illustrates friction as the resistance between surfaces in contact converts kinetic energy into thermal energy producing warmth.