Class 9 Physics motion in 1D question set 1 full marks 30

A. All question 2 marks ( any 6)

1. Difference between scaler and vector. Minimum 3

2. Pressure is scaler or vector why ?

3. What does you mean by rest and motion.

4. A train takes 2 h to reach station B from station A, and then 3 h to return from station B to station A. The distance between the two stations is 200 km. Find: (i) The average speed, (ii) The average velocity of the train

5. When velocity change but speed is constant? When distance and displacement is same

6. A body is moving vertically upwards. Its velocity changes at a constant rate from 50 m/s to 20 m/s in 3 s. What is its acceleration?

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B. All question 3 marks ( any 6)

1. A car is moving in a straight line with speed 18 km/h. It is stopped in 5 s by applying the brakes. Find (i) the speed of car in m/s, (ii) the retardation and (iii) the speed of car after 2 s of applying the brakes.

2. What is Uniform acceleration give an example. What is non uniform acceleration?

3. Proof S=ut + 1/2 at^2 graphically

4. A bullet initially moving with a velocity 20 m/s strikes a target and comes to rest after penetrating a distance 10 cm into the target. Calculate the retardation caused by the target.

5. A body moving with a constant acceleration travels the distances 3 m and 8 m, respectively in 1 s and 2 s.Calculate:(i) The initial velocity.(ii) The acceleration of body.

6. Ankit Bhaiya first go to Adra from Raghunathpur at 40 km/h and return back at 60km/h. What is average speed and average velocity.

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