Name the axis that represents dependent variable.

2

(a)

Briefly explain how will decide which object is moving fast and which one is moving slow.

2

(a)

Determine the number of seconds there in a day.

2

(a)

Estimate that how many hours are there in a year.

2

(a)

Explain how time was measured when pendulum clocks were not available.

2

(a)

State the factors on which the time period of a simple pendulum depend.

2

(a)

Name the different types of graphs.

2

(a)

State the way through which we can prepare a pendulum by our own.

2

(a)

What is a sand clock?

2

(a)

What is a sundial?

2

(a)

What is a simple pendulum ? What is the timeperiod of a pendulum?

2

(a)

(a) What is called the bob of the pendulum?
(b) A simple pendulum takes 35s to complete 20 oscillations. What is the time-period of the pendulum ?

2

(a)

A train is running at a speed of 45 km/h, How long will it take to reach Lucknow from Delhi when the distance between two stations is 350 km ?

2

(a)

What is meant by slow and fast motion?

2

(a)

A stone is dropped from a height of 20m above the ground. Will it have a uniform or non-uniform speed, as it moves towards the ground?

2

(a)