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- UNIT-1 | SCIENCE AND TECHNOLOGY - Motion and its Description | NIOS BOARD QUESTIONS FOR - 2017

**UNIT-1 | SCIENCE AND TECHNOLOGY - Motion and its Description | NIOS BOARD QUESTIONS FOR - 2017****------------------------------------------------------------------------------------------------------****NOTE : GIVE ANSWERS IN 5 LINES ONLY**

Q1. A player completes his half of the race in 60 minutes and next half of the race

in 40 minutes. If he covers a total distance of 1200 m, find his average speed.

Q2. A train has to cover a distance of 1200 km in 16 h. The first 800 km are covered

by the train in 10 h. What should be the speed of the train to cover the rest

of the distance? Also find the average speed of the train.

Q3. A bird flies from a tree A to the tree B with the speed of 40 km h–1 and returns

to tree A from tree B with the speed of 60 km h–1. What is the average speed

of the bird during this journey?

Q4. An object is dropped from the height of 19.6 m. Find the distance travelled by

object in last second of its journey.

Q5. Show that for a uniformly accelerated motion starting from velocity u and

acquiring velocity v has average velocity equal to arithmetic mean of the initial

(u) and final velocity (v).

Q6. An object is dropped from the height of 19.6 m. Draw the displacement-time

graph for time when object reach the ground. Also find velocity of the object

when it touches the ground.

Q7. A car travelling initially at 7 ms–1 accelerates at the rate of 8.0 ms–2 for an interval of 2.0 s. What is its velocity at the end of the 2 s?

Q8. A car travelling in a straight line has a velocity of 5.0 ms–1 at some instant. After 4.0 s, its velocity is 8.0 ms–1. What is its average acceleration in this time interval?

Q9. A bicycle increases its velocity from 10km/h to 15km/h in 6 seconds. Find its acceleration?

Q10. An object moves along a straight line with an acceleration of 2 m/s2. If its initial speed is 10m/s ,what will be its speed 5 seconds later ?

Q11. An object dropped from a cliff falls with a constant acceleration of 10 m/s2.Find its speed 2 Seconds after it was dropped.

Q12. A bullet hits a wall with a velocity of 20m/s and penetrates it up to a distance of 5 cm. Find the deceleration of the bullet in the wall

Q13. A train starts from a station and moves with a constant acceleration for 2 minutes. If it covers a distance of 400m in this period, find the acceleration.

Q14. A Ship moving with a constant acceleration of 36km/h2 in a fixed direction speeds up from 12km/h to 18km/h.Find the distance traversed by the ship in this period.

Q15. A particle starts from a point with a velocity of +6.0m/s and moves with an acceleration of -2.0m/s2. Show that after 6s

the particle will be at the starting point.

Q16. A bicycle moves with a constant velocity of 5km/h for 10minutes and then decelerates at the rate 1km/h2, till it stops.Find the total distance covered by the bicycle.

Q17. An object is moving along a straight line with a uniform speed of 10m/s. Plot a graph showing distance versus time from t=0 to t=10s.

Q18. A particle moves along a straight line with a uniform velocity of 5.0m/s. plot a distance-time graph for the period t=0 to t=5s.

Q19. What is the difference between velocity and speed?

Q20. What is the difference Between Rest and motion?

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