Question

11. A physical therapist is using a wide elastic band to help a

Answer 1

Answer:

(C) 5 decimeters

Step-by-step explanation:

A therapist is using an elastic band to strengthen a patient's knee after surgery.

The patient's knee can tolerate a maximum of 20 kg i.e. 20000 gm weight of force.

If the elastic band provides 40 gm of weight force for every millimeter of its extension.

then this can be extended up to $\frac{20000}{40} =500$ millimeters, which is equal to 5 decimeters.  

Therefore, option c is correct. (Answer)