Question
A rubber ball is dropped from a height of 2 metres. To
what height will it rise if there is no loss of energy/velocity after rebounding?Solution
The potential energy of a body when raised through height h is given by mgh. Each time, a normal rubber ball hits the floor, it loses one-fifth of its total energy and the rebound height is proportional to energy, so each bounce will rebound to four-fifth of the previous bounce.
Statements: A < B < C < D > E
Conclusions: I. E < BÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â II. D > A
...In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is /are definitely true and ...
In this question, the relation between various elements is shown in the statement. After the statement, two conclusions are given, select a suitable opt...
Statements: F > C > K; L < G < D; C ≥ H < D > I
Conclusions:
I. L < C
 II. K > I
III. F > H
Statements:
A ≥ T > I, D > I, U = P ≥ I
Conclusions:
I. U > D
II. A > I
Statements: H ≥ R, T < L, R ≥ T, L < N > I
Conclusion:
I. R > I
II. N ≥ T
Statements: A > B ≥ F = E ≤ G > C = D ≤ H
Conclusion
I: H ≤ F
II: H > F
Statements: B ≥ U > P = E ≥ X; X > K > N ≥ J
Conclusions: I. N < P   II. J ≤ X
In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is /are definitely true and ...
In which of the following expressions will the expression ‘ Q > B ’ be definitely true?
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