Question

Questions with answers on Motion, Force and Work
, Friction
,Simple Machines

Answer 1

Answer:

Friction - Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

simple machines - Simple machine, any of several devices with few or no moving parts that are used to modify motion and the magnitude of a force in order to perform work. ... The simple machines are the inclined plane, lever, wedge, wheel and axle, pulley, and screw.

Explanation: