Given that Retarding force, F = – 20 N Mass of the body, m = 10 kg Initial velocity of the body, u = 12 m /s Final velocity of the body, v = 0 Using Newton’s second law of motion, the retardation (a) produced in the body can be calculated as: F = ma – 20 = 10 × a ∴ a = −20/10 = − 2 m/s2 Using the first equation of motion, the time (t) taken by the body to come to rest can be calculated as v = u + at ∴ t = -u/a = −12/−2 = 6 seconds Hence time taken by the body to come to rest is 6 seconds
Select the number-pair in which the two numbers are related in the same way as are the two numbers of the following number-pair.
7 : 85
4863
x 1211
If ‘ x' is the resultant of the first row, what is the resultant of the second row?
...Some equations are solved on the basis of a certain system. Find the correct answer for the unsolved equation on that basis.
11 * 7 = 72, 14 * 7 ...
Select the option that is related to the fourth number in the same way as the first number is related to the second number and the fifth number is relat...
87 25 36
44 22 13
What is the sum of the resultants of the two rows?
...Read the directions carefully and answer the following question.
If in the number ‘ 9887532691 ’, the even digits are shifted to the next ...
How many 6s are there in the following number series which are preceded by 4 and followed by 8.
2 4 6 8 4 2 8 6 4 8 7 3 8 6 4 2 4 6 8 7 4 6 9 4
A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
13, 38, 150, _____, 4478, 31341.
If digits of each number are arranged is ascending order from, how many number/ numbers thus formed would be perfect square/ squares?
