Question

7. Fill in the blanks
a. Force always opposes the motion______

b. Is a device used to measure force acting on an object_______

c. Ball bearing is commonly used in bicycle wheels to_______ friction.

d. Gymnasts apply of course substance on their hands to
_______friction.

e. Limiting friction is_______
of the area of contact.​

Answer 1

Explanation:

a. frictional force because it always act against the direction of motion and opposes.

b.Dynamometer.

c.static friction.