What is rectilinear motion? Give six …

Motion of a body along a straight line is called rectilinear motion.

• Consider a block of wood sliding down the inclined plane. In this case the motion is rectilinear. The center of mass is moving along a straight line. And hence the motion is called so. Basically it is the linear motion.
• Consider a train moving along a straight track. This is also rectilinear motion.
• Consider an apple falling down from the tree. This is rectilinear motion as the apple falls under the influence of gravity.
• The freely falling metal body under the influence of gravity is rectilinear motion. The coffee falling in the cup from the coffee machine is the rectilinear motion of the coffee.
• The lift moving up or down is also rectilinear motion. In this case the lift is moving along a straight line and also its center of mass is moving along a straight line.
• The man sliding a box along the straight line is the rectilinear motion for the box as its center of mass is moving across the straight line.