Motion & Time

The standard unit of time

• second

• minute

• hour

The motion which repeats itself regular intervals of time

• Linear motion

• circular motion

• Periodic motion

The time taken by a simple pendulum to complete one oscillation.

• amplitude

• Time period

• frequency

The time period of a simple pendulum depends upon

• the mass of the bob

• the extent to which the bob is displaced

• the length of the thread

If a simple pendulum takes 40 seconds to complete 20 oscillations, its time period is

• 2 s

• 0.5 s

• 4 s

The distance covered by an object in a unit time.

• Speed

• Velocity

• Frequency

SI unit of speed

• km/hr

• km/m

• m/s

The speedometer measures the speed in

• km/hr

• m/s

• m/hr

The device used to measure the distance covered by a vehicle

• speedometer

• odometer

• anemometer

The d-t graph for the motion of an object moving with a constant speed is

• a curved line

• a straight line

• a zig-zag line