MOTION AND TIME

What is the drawback of a sundial?

• It is not portable

• It is based on the principal of shadow formation

• It does not have any drawback

• It doesn't work in night

How to calculate average speed?

• Total time taken/Total distance covered

• Total distance covered/Total time taken

• Total speed/Total time taken

• Total distance taken/Total speed

SI unit of speed is:

• seconds/metre

• metre/seconds

• kilometre/hour

• hour/kilometre

Till _________ pendulum clocks were most acurate

• 1931

• 1930

• 1932

• 1929

What is mean position?

• The position when pendulum is at rest

• The to and fro position

• The lenght of the string

• The weight of the ball

Which of these is a ancient measurement device:

• Sundial

• Quartz clock

• Water clock

• Pendulum clock

Types of graphs:

• Bar graph

• Line graph

• Perpendicular pie chart

• Pie chart

Tags

NGSS.MS-PS3-1

When an object covers equal distance in equal interval of time, it is known as -

When an object covers unequal distance in equal/ unequal interval of time

How to calculate speed?

• Distance/Time

• Time/Distance

• Speed/Time

• Distance/Speed

Tags

NGSS.MS-PS3-1