Test: Motion & Measurement of Distances - UPSC MCQ

• Oscillatory motion takes place when the restoring force acting on the body is directly proportional to its displacement from its equilibrium position. In practice, oscillatory motion eventually comes to rest due to damping or frictional forces.
• Non-periodic motion: The motion which does not repeat itself after a regular interval of time is called non-periodic motion. Examples: A footballer running on a field, application of brakes in a moving vehicle, a ball rolling the ground gradually slows down finally stops, the motion of tides in the sea, etc.
• A type of motion in which all parts of the body move the same distance in a given time is known as translatory motion. Translatory motion can be of two types: rectilinear and curvilinear.
• The movements of the earth around the sun are an example of periodic motion as it is completed in a fixed interval of time.

One centimetre (cm) is equal to:

► 10 mm
► 10^-2m
► 10^-5km

One kilometre is equal to 1000 meter.

Rectilinear motion is when objects move along a straight line. This means they go in a straight direction without turning or going in circles.

In the International System of Units (SI units), the standard unit of length is a meter. This is a measurement used to calculate distances. For example, the length of a room can be measured in meters which tells us how long it is.