anyone give me questions of chapter 8 motion science.
give me (1 mark questions for chapter 8 motion science class 9
Answers
Explanation:
1. A particle is moving in a circular path of radius r. The displacement after half a circle would be:
(a) Zero
(b) π r
(c) 2 r
(d) 2π r
Soln:
Answer is (c) 2r.
2. A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is,
(a) u/g
(b) u2/2g
(c) u2/g
(d) u/2g
Soln:
Answer is (b) u2/2g
3. The numerical ratio of displacement to distance for a moving object is
(a) always less than 1
(b) always equal to 1
(c) always more than 1
(d) equal or less than 1
Soln:
Answer is (d) equal or less than 1
4. If the displacement of an object is proportional to square of time, then the object moves with
(a) uniform velocity
(b) uniform acceleration
(c) increasing acceleration
(d) decreasing acceleration
Soln:
Answer is (b) uniform acceleration
.5 From the given v – t graph (Fig. 8.1), it can be inferred that the object is
(a) in uniform motion
(b) at rest
(c) in non-uniform motion
(d) moving with uniform acceleration
v-t graph
Soln:
Answer is (a) in uniform motion