Subject :NSO Class : Class 5
Subject :NSO Class : Class 5
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 9
Ans 1:
Class : Class 9
This is because due to small mass the rain drop feels the air resistance but ball don't.
Ans 2:
Class : Class 9
Sorry to say but your ans. is wrong Yash as because the surface of ball is greater than that of ball it will feel more resistance than drop and has lower speed but thats that's not true....it is because of inertia as the body which has greater mass can resist more force and because in this case ball has more mass it can resist air friction easily but due to light weight of drop it can't
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 1
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Subject :NSO Class : Class 9
Ans 1:
Class : Class 9
acceleration due to gravity is considered negative only when a body is projected vertically upwards and during free fall it is taken to be positive. The acceleration is towards the center of the earth and therefore provides a retarding force that pulls back the object when it is rising.
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Subject :NSO Class : Class 5
Ans 1:
Class : Class 8
Sedimentary rocks are formed by the sedimentation of sand and dead animals in water bodies.
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Subject :NSO Class : Class 5