# NCERT Class VII Science Solutions: Chapter 13-Motion 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**