Question

select the correct answer.
what type of force does a backpack exert on the bodys back and hips?
a. tension
b. compression
c. flexion
d. extension

Explanation:

Compression is a force that squeezes or shortens an object. A backpack's weight pushes down on the back and hips, compressing those body parts. Tension pulls apart, flexion bends a joint (not a force type here), and extension straightens a joint (also not relevant as a force here). So the force is compression.

Answer:

B. compression