EASY
7th CBSE
IMPORTANT
Earn 100

Who invented sundials in India? Name the places where these sundials are located.

Important Questions on Time and Motion

EASY
7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 13 - Time and Motion>EXERCISES>Q VI
Why do we say that rest and motion are relative terms?
EASY
7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 13 - Time and Motion>EXERCISES>Q VI
Define variable speed. Support your answer by two examples.
MEDIUM
7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 13 - Time and Motion>EXERCISES>Q VI
An aeroplane is flying at a speed of 500 km/h. How much distance will it cover in 15 minutes ?
MEDIUM
7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 13 - Time and Motion>EXERCISES>Q VI
A pendulum takes 25 s to complete 20 oscillations. What is the time period of the pendulum?
MEDIUM
7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 13 - Time and Motion>EXERCISES>Q VI
The distance between Amritsar and Delhi is 450 km. If Shatabdi train takes 6 h to cover this distance, what is the average speed of the train?
MEDIUM
7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 13 - Time and Motion>EXERCISES>Q VI
At 07:00 a.m. the odometer of a car reads 25777. What is the distance covered by the car and its speed when the clock reads 09:15 a.m. and the odometer reads 25867?
MEDIUM
7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 13 - Time and Motion>EXERCISES>Q VI
A student takes 20 min to reach his school on a bicycle. If the speed of the bicycle is 2.5 m/s, how far is the school?
HARD
7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 13 - Time and Motion>EXERCISES>Q VI
Show the motion of the following graphically drawing distance-time graphs.

(i) A car parked on roadside.

(ii) A truck moving with constant speed.