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.
In each of the given number-clusters, the number on the right side of = (the equal to sign) is calculated by performing certain mathematical operations ...
By interchanging which two signs and two numbers (not digits) the equation will be correct?
8 – 4 × 9 + 6 ÷ 3 = 29
A question is given, followed by two statements numbered (I) and (II). You have to decide whether the data provided in the statements is sufficient to a...
In a certain code language, 'WORSHIP' is written as '23418198316' and 'ROAD' is written as '18414'. How will 'REDUCE' be written in that language?
Rama remembers that she met her brother on Saturday, which was after the 20th day of a particular month. If the 1st day of that month was Tuesday, then ...
In the question, three statements are given, followed by three conclusions, I, II & III You have to consider the statements to be true even if it seems ...
Select the option which is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and t...
In a certain code language, ‘COWS’ is coded as ‘7935’ and ‘OILY’ is coded as ‘2568’. What is the code for ‘O’ in that language?
...Three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which is the letter-cluster pair that does NOT belong...
In a certain code language, 'A' is coded as '2', 'B' is coded as '4' and 'C' is coded as '6'. Which word will be coded as '1210108' as in that code lan...
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