Physical Science Class 9>Chapter 2 - Motion>Let us Improve our learning>Q 5

MEDIUM

9th Telangana Board

IMPORTANT

Earn 100

Draw the distance-time graph when the speed of a body decreases uniformly.

Important Questions on Motion

EASY

9th Telangana Board

IMPORTANT

Physical Science Class 9>Chapter 2 - Motion>Let us Improve our learning>Q 6

What is the average speed of a Cheetah that sprints

100 m

in

4 s

? What if it sprints

50 m

in

2 s

?

MEDIUM

9th Telangana Board

IMPORTANT

Physical Science Class 9>Chapter 2 - Motion>Let us Improve our learning>Q 7

A car travels at a speed of

80 km h^{- 1}

during the first half of its running time and at

40 km h^{- 1}

during the other half. Find the average speed of the car.

HARD

9th Telangana Board

IMPORTANT

Physical Science Class 9>Chapter 2 - Motion>Let us Improve our learning>Q 8

A particle covers

10 m

in first

5 s

and

10 m

in next

3 s

. Assuming constant acceleration, find initial speed, acceleration and distance covered in next

2 s

.

MEDIUM

9th Telangana Board

IMPORTANT

Physical Science Class 9>Chapter 2 - Motion>Let us Improve our learning>Q 1

When the velocity is constant, can the average velocity over any time interval differ from instantaneous velocity at any instant? If so, give an example; if not explain why.

HARD

9th Telangana Board

IMPORTANT

Physical Science Class 9>Chapter 2 - Motion>Let us Improve our learning>Q 2

You may have heard the story of the race between the rabbit and tortoise. They started from same point simultaneously with constant speeds. During the journey, rabbit took rest somewhere along the way for a while. But the tortoise moved steadily with lesser speed and reached the finishing point before rabbit. Rabbit woke up and ran, but rabbit realized that the tortoise had won the race. Draw distance vs time graph for this story.

HARD

9th Telangana Board

IMPORTANT

Physical Science Class 9>Chapter 2 - Motion>Let us Improve our learning>Q 3

A man is