Class 7 physics motion and time

The distance travelled by an object in unit time is called its

• Motion

• Speed

• Odometer

• Time

Tags

NGSS.MS-PS3-1

They have an electric circuit that works with the help of cells. They provide accurate time.

• Pendulum clock

• Sand clock

• Quartz clock

• Water clock

A bus takes 30 minutes to travel a distance of 25 kilometers. The speed of the bus in km/h is :

• 55 km/h

• 50 km/h

• 5 km/h

• 75 km/min

The to and fro motion of a simple pendulum is an example of _________ motion.

• Rectilinear

• oscillatory

• circular

• curvilinear

If the distance time graph is a curved line:

• A non-uniform speed is maintained by the object

• The object covers unequal distances in equal intervals of time

• Both A and B

• None of the above

A graph is shown below. What does the area of the shaded portion in the graph represent?

• Distance

• Speed

• Uniform motion

• Time

Tags

NGSS.MS-PS3-1

The speed of an object can be represented by:

• bar graph

• histograms

• Pie chart

• distance-time graph or line graph

Tags

NGSS.MS-PS3-1

The instrument installed in a car for measuring the distance travelled by the car is called:

• barometer

• speedometer

• anemometer

• Odometer

SI unit of time is:

• Minute

• Second

• Mili seconds

• Hour

A simple pendulum takes 32 seconds to complete 20 oscillations. The time period of this pendulum is:

• 12 seconds

• 1.8 seconds

• 1.6 seconds

• 52 seconds