NCERT Class VII Science Solutions: Chapter 13Motion and Time Part 2
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Question 4:
A bus travels in . The speed of the bus is
Answer: B
Question 5:
If we denote speed by S. distance by D and time by T, the relationship between these quantities is
Answer: C
Question 6:
Observe Figure
The time period of a simple pendulum is the time taken by it to travel from

A to B and back to A.

O to A, A to B and B to A.

B to A, A to B and B to O.

A to B.
Answer: A
Question 7:
Fig. shows an oscillating pendulum.
Time taken by the bob to move from A to C is and from C to O is . The time period of this simple pendulum is
Answer: D
Question 8:
The correct symbol to represent the speed of an object is
Answer: A
Question 9:
Boojho walks to his school which is at a distance of 3 km from his home in 30 minutes. On reaching he finds that the school is closed and comes back by a bicycle with his friend and reaches home in 20 minutes. Ills average speed in km/h is

8.3

7.2

5

3.6
Answer: B