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Soni says that the acceleration in an object could be zero eve
Science
Science

Class 9

NCERT

Publisher:
NCERT
Subject:
Science
1

Chapter 1: Matter in Our Surroundings

9 questions

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2

Chapter 2: Is Matter Around Us Pure?

13 questions

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3

Chapter 3: Atoms and Molecules

16 questions

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4

Chapter 4: Structure of the Atom

19 questions

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5

Chapter 5: The Fundamental Unit of Life

10 questions

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6

Chapter 6: Tissues

15 questions

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7

Chapter 7: Diversity in Living Organisms

6 questions

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8

Chapter 8: Motion

18 questions

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9

Chapter 9: Force and Laws of Motion

29 questions

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10

Chapter 10: Work and Energy

23 questions

Q1
In each of the following a force, is acting on an object of mass . The direction of displacement is from west to east shown by the longer arrow. Observe the diagram carefully and state whether the work done by the force is negative, positive, or zero.
Q2
Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?
Q3
Find the energy in kwh consumed in hours by four devices of power each.
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11

Chapter 11: Sound

25 questions

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12

Chapter 12: Why do We Fall Ill?

6 questions

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13

Chapter 13: Natural Resourses

6 questions

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14

Chapter 14: Improvement in Food Resources

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15

Chapter 15: Gravitation

29 questions

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Question
Easy
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Solving time: 3 mins

Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?

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Views: 5,611 students

Updated on: Dec 4, 2022

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Book:

Science (NCERT)

Text SolutionText solutionverified iconVerified

Yes, I agree with Soni that the acceleration in an object could be zero even when several forces are acting on it. 
Let  equal and opposite forces   act on an object, they cancel out each other so that the net external force experienced by the object is zero which makes the object to move with zero acceleration.
                
   
Thus  an object will kept on moving with a constant velocity  if it was also moving initially.
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In each of the following a force, is acting on an object of mass . The direction of displacement is from west to east shown by the longer arrow. Observe the diagram carefully and state whether the work done by the force is negative, positive, or zero.
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Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?
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Question Text
Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?
Updated OnDec 4, 2022
TopicWork and Energy
SubjectScience
ClassClass 9
Answer TypeText solution:1 Video solution: 2
Upvotes258
Avg. Video Duration5 min