If the speed of an object moving along a straight line does not keeps changing, then its a _______________ motion.

One of the most well-known periodic motion is that of

The basic unit of time is

Larger units of time from these is

____________ is a refinement of the pendulum clock.

Whose observation led to development of pendulum clock?

The symbols of all units are written in

The smallest time interval that can be measured with commonly available clocks and watches is 

1 microsecond is ____________ of a second

1 nanosecond is __________ of a second.

Example of commonly used time measuring devices used in sports is

Times of historical events are stated in terms of centuries or _____________.

Ages of planets and stars are often expressed in ____________.

A meter which measures the distance moved of vehicle is 

The meter that measures the speed of a vehicle at a particular period is

The speedometer measures the speed of a vehicle in 

Distance = 

 Which one of these is not a type graph?

Distance/Speed = 

1 km in the ground = ___ cm in the graph sheet.

The metallic ball hanging from the pendulum is called as

Sand clock is similar to

The tim taken by the pendulum to complete 1 oscillation is called as

The distance covered by an object is called