Motion CBSE Class 9 Grade Standard, Question Paper, Sample Question Paper 2012 2013 Exam CBSE SiteMap

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Motion CBSE Class 9 Grade Standard

Motion CBSE Class 9 Grade Standard



Sample Paper – 2013
Class – IX
Subject –Science

Motion

  1. A farmer moves around the boundary of a square field of side 10m in 40 sec. What will be magnitude of displacement at the end of 2 min 20 sec from his initial position. Also find total distance moved by him.
  1. Usha swims in a 90m long pool. She covers 180m in one min by swimming from one end to the other and back along the same path . Find her average speed and average velocity.
  1. What are differences between distance and displacement?
  1. An athlete complete one round of a circular track of diameter 200m in 40sec . What will be the distance covered and the displacement at the end of 2mon 20sec.
  1. Abdul while driving to his school compute the average speed to be 20km/hr. On his return trip he compute the average speed as 30km/hr.Find average speed of entire jorney.
  1. Define uniform circular motion.If an athlete complete 2 and half round of a circular track of radius 14 m in 10sec find his speed.
  1. Graphically derive the expression s= ut+ ½ at2
  1. Which physical quantity is measured by finding area enclosed in velocity time graph.
  1. Starting from rest Rahul paddles his bicycle to aquire a velocity of 6m/s in 30s . Than he applies brakes such that speed of bicycle became 4m/s in next 5sec.calculate acceleration in both cases and total distance travelled.
  1. Name the device used to measure : a. Distance b. speed

11.

Time(s)

0

5

10

15

20

Velocity(m/s)

0

10

10

20

o

Draw a velocity time graph from above given informations and find

  1. Acceleration in first 5s and than in next 5s.
  2. Acceleration in last 5 sec
  3. Total distance travelled

12 . what can you say about the nature of motion whose graph on V-T graph is straight line parallel to time axis.
13 . A stone is thrown in vertically upward direction with a velosity 15m/s. Find the maximum height attained by ston an time taken till come back to hand after thrown.( g= 10m/s2 
14.A ball is dropped from a height of 20m and accelerate uniformaly at rate 10m/s2 . Find the velocity by which it will strike the ground and time taken in this journey.
15. A motorboat starting from rest and accelerate at rate of 3m/s2 in a lake for 8 sec. Find its final velocity.




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