Physics Motion Class 9
Questions taken from S. Chand
Questions
Based on High Order Thinking Skills (HOTS)
55. A body
is moving along a circular path of radius R. What will be the distance
travelled and displacement of the body when it completes half a revolution ?
56. If on a
round trip you travel 6 km and then arrive back home :
(a) What distance have
you travelled ? (b) What is your final displacement ?
57. A body
travels a distance of 3 km towards East, then 4 km towards North and finally 9
km towards East.
(i) What is the total distance travelled ? (it) What is the
resultant displacement ?
58. A boy
walks from his classroom to the bookshop along a straight corridor towards
North. He covers a distance of 20 m in 25 seconds to reach the bookshop. After
buying a book, he travels the same distance in the same time to reach back in
the classroom. Find (a) average speed, and (b) average velocity, of the boy.
59. A car
travels 100 km at a speed of 60 km/h and returns with a speed of 40 km/h. Calculate
the average speed for the whole journey.
60. A ball
hits a wall horizontally at 6.0 m s-I. It rebounds horizontally at 4.4 m s-I.
The ball is in contact with the wall for 0.040 s. What is the acceleration of
the ball?
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