Notes
Concept Maps
Assignments
NCERT Solutions
Short Answer Based questions for Motion
What is unit of acceleration?
What is zero uniform velocity motion?
A body moving in a circle with constant speed. Is it acceleration?
A body goes from point A to B and then return then from B to A. what is the total displacement?
Acceleration is a vector quantity True or false?
What is the path of a velocity –time graph of a body moving with uniform acceleration
What all ways the velocity of the body can be changed?
What is average speed?
Match the column
| column A |
Column B |
| The Slope of the speed-time graph is called |
Average Velocity |
| The arithmetic mean of initial and final velocity |
distance |
| What quantity is obtained by the area under speed time graph |
acceleration |
| The slope of the distance time graph |
speed |
Table type question
A car moves in a straight line from rest at t=0. It accelerates with $2m/s^{2}$ . Solve the following table
| Time |
2 sec |
? |
? |
10 min |
| Displacement |
? |
? |
25 m |
? |
| Velocity |
? |
10 m/s |
? |
? |
Fill in the blanks
- A car starts at rest and travel a distance 20 m in 1 sec .The car average speed is ……………..
- Motion of earth around sun is an example of ………….
Motion
- Tractor moving with 18 km/h is ……….. then car moving with 1500 m/min
- The motion of a free falling body is an example of ………………….. motion
- The curved speed time graph represent …………………accelerated motion
- Distance is a ………quantity while displacement is a ………………… quantity
Crossword Puzzle
Across
2. Physical quantity obtained by dividing displacement with time taken
3. A quantity having both magnitude and direction
4. This remains constant in uniform circular motion
6. It is the slope of speed -time graph
8. This measure the distance travelled by the car
Down
1. This is the other name for negative acceleration
4. The speed is said to be a
5. This is the acceleration of the body with uniform velocity
7. This measure the speed of the car
-
Solutions
Fill in the blanks Solution
1) 20 m/s
2) Uniform circular motion
3) Lesser
4) Uniform acceleration motion
5) Not uniform
6) Scalar , vector
Crossword solution
Across
Velocity, Vector, speed, acceleration, Odometer
Down
Retardation, Scalar, Zero, Speedometer
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Class 9 Maths
Class 9 Science
