Physics - Motion - Class - 7 - Selina Solution - ICSE.

 6. Explain the meanings of (i) rectilinear motion, and (ii) curvilinear motion. Give one example of each.

Rectilinear motion - if the motion of a body is along a straight line, it is known as rectilinear motion. Rectilinear motion is also called linear motion.

An apple falling from height falling on earth and a car moving in a straight path are examples of rectilinear motion.

Curvilinear motion - if the motion of a body is along a curved path, it is known as curvilinear motion. The direction of motion is constantly changing in this motion.

The cyclist taking a turn and the path of a stone thrown in the sky are examples of curvilinear motion.