Question 1

1. Which quantity specifies both speed and direction of motion?

Accepted Answer

Velocity

Question 2

2. Under what condition is the magnitude of average velocity equal to its average speed?

Accepted Answer

When the object moves in a straight line without changing direction

Question 3

3. What device in an automobile measures the distance travelled?

Accepted Answer

Odometer

Question 4

4. What does the path of an object look like when it is in uniform motion?

Accepted Answer

A straight line

Question 5

5. A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position?

Accepted Answer

10 m

Question 6

6. When is a body said to be in uniform acceleration?

Accepted Answer

When its velocity changes by equal amounts in equal intervals of time

Question 7

7. A bus decreases its speed from 80 km/h to 60 km/h in 5 s. What is the acceleration of the bus?

Accepted Answer

-1.11 m/s�

Question 8

8. A train starting from a railway station and moving with uniform acceleration attains a speed of 40 km/h in 10 minutes. Find its acceleration.

Accepted Answer

0.0185 m/s�

Question 9

9. What is the SI unit of acceleration?

Accepted Answer

m s?�

Question 10

10. If the velocity of an object changes from an initial value 'u' to a final value 'v' in time 't', what is the formula for acceleration 'a'?

Accepted Answer

a = (v - u) / t

Motion - Class 9 Science Quiz

A Quiz for CBSE Class 9 Science Students (Set 5)

1. Which quantity specifies both speed and direction of motion?

2. Under what condition is the magnitude of average velocity equal to its average speed?

3. What device in an automobile measures the distance travelled?

4. What does the path of an object look like when it is in uniform motion?

5. A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position?

6. When is a body said to be in uniform acceleration?

7. A bus decreases its speed from 80 km/h to 60 km/h in 5 s. What is the acceleration of the bus?

8. A train starting from a railway station and moving with uniform acceleration attains a speed of 40 km/h in 10 minutes. Find its acceleration.

9. What is the SI unit of acceleration?

10. If the velocity of an object changes from an initial value 'u' to a final value 'v' in time 't', what is the formula for acceleration 'a'?

Quiz Results

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Motion - Class 9 Science Quiz

A Quiz for CBSE Class 9 Science Students (Set 5)

1. Which quantity specifies both speed and direction of motion? Read

2. Under what condition is the magnitude of average velocity equal to its average speed? Read

3. What device in an automobile measures the distance travelled? Read

4. What does the path of an object look like when it is in uniform motion? Read

5. A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position? Read

6. When is a body said to be in uniform acceleration? Read

7. A bus decreases its speed from 80 km/h to 60 km/h in 5 s. What is the acceleration of the bus? Read

8. A train starting from a railway station and moving with uniform acceleration attains a speed of 40 km/h in 10 minutes. Find its acceleration. Read

9. What is the SI unit of acceleration? Read

10. If the velocity of an object changes from an initial value 'u' to a final value 'v' in time 't', what is the formula for acceleration 'a'? Read

Quiz Results

Was this page helpful?

1. Which quantity specifies both speed and direction of motion?

2. Under what condition is the magnitude of average velocity equal to its average speed?

3. What device in an automobile measures the distance travelled?

4. What does the path of an object look like when it is in uniform motion?

5. A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position?

6. When is a body said to be in uniform acceleration?

7. A bus decreases its speed from 80 km/h to 60 km/h in 5 s. What is the acceleration of the bus?

8. A train starting from a railway station and moving with uniform acceleration attains a speed of 40 km/h in 10 minutes. Find its acceleration.

9. What is the SI unit of acceleration?

10. If the velocity of an object changes from an initial value 'u' to a final value 'v' in time 't', what is the formula for acceleration 'a'?