A freely falling body crosses the points A, B and C with velocities v, 2v, 3v. Then AB : AC =
A) 1 : 2
B) 1 : 3
C) 1 : 1
D) 3 : 8
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20. A coconut of mass \( 2 Kg \) is falling from a coconut free of height \( 10 m \). Find the potential energy, kinetic energy and total energy at the following points. \( \left( g =10 m / s ^{2}\right) \) a) Before falling from the coconut tree. b) Just before hilting the ground. c) At a height \( 4 m \) from the ground. d) Which law is evident from this example?
(a) Given m = 2 kg h = 10 m Potential energy at before falling from the coconut tree. u = mgh u = 2 x 10 x 10 u = 200 joule Kinetic energy will...
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A freely falling body describes a distance x in first 2 seconds and a distance y in next 2 seconds. Then
Correct option is D) y = 3x
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A body falling for 2 sec. covers a distance ‘s’ equals to that covered in next second. If g = 10 m/s^2 , s =
Correct option is A) 30 m
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For a freely falling body, a = ………………. A) – g B) + g^2
Correct option is D) + g
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When a body is freely suspended, the weight is evidenced by ……………
Correct option is C) tension
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When a body falls freely then it experiences ………………. A) weight
C) weightlessness
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What is initial velocity of freely falling body ? A) 9.8 m/s
Correct option is C) 0 m/s
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Work done by gravitational force on a freely falling body ………………..
Correct option is C) positive
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In case of a freely falling body …………… energy is gradually converted into ………………. energy at a certain height ‘h’.
A) potential, kinetic
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a particle moving along a straight line with uniform acceleration has velocities `7 m//s` at A and `17 m//s` at C. B is the mid point of AC. Then :-
Correct Answer - B, C, D
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