Skip to main content

Conversion of speed.

Conversion of speed:

The below table shows the Conversion from km/hr to m/s .for converting km/hr to m/s,we need to multiply with the conversion factor of 5/18. The table shows the speed in 9 km/hr to 180 km/r converted speed in m/s from 2.5m/s to 50m/s
Sl No
Speed in km/hr
Conversion factor
Speed in m/s




1
9
5/18
2.5
2
18
5/18
5
3
27
5/18
7.5
4
36
5/18
10
5
45
5/18
12.5
6
54
5/18
15
7
63
5/18
17.5
8
72
5/18
20
9
81
5/18
22.5
10
90
5/18
25
11
99
5/18
27.5
12
108
5/18
30
13
117
5/18
32.5
14
126
5/18
35
15
135
5/18
37.5
16
144
5/18
40
17
153
5/18
42.5
18
162
5/18
45
19
171
5/18
47.5
20
180
5/18
50 












The below table shows the Conversion from m/s to km/hr .for converting m/s to km/hr,we need to multiply with the conversion factor of 18/5. The table shows the speed in 2.5m/s to 50m/s converted speed in km/hr from 9 km/hr to 180 km/hr

Sl No
Speed in m/s
Conversion factor
Speed in km/hr




1
2.5
18/5
9
2
5
18/5
18
3
7.5
18/5
27
4
10
18/5
36
5
12.5
18/5
45
6
15
18/5
54
7
17.5
18/5
63
8
20
18/5
72
9
22.5
18/5
81
10
25
18/5
90
11
27.5
18/5
99
12
30
18/5
108
13
32.5
18/5
117
14
35
18/5
126
15
37.5
18/5
135
16
40
18/5
144
17
42.5
18/5
153
18
45
18/5
162
19
47.5
18/5
171
20
50
18/5
180






Comments

Popular posts from this blog

average of first 100 odd numbers

  Odd  numbers are 1,3,5,7,9,…. Average = sum of elements/  no  of elments Now we will see the sum of elements: Sum of first 2 odd  numbers: 1+3= 4= 2 2 Sum of first 3 odd  numbers: 1+3+5= 9= 3 2 Sum of first 4 odd  numbers: 1+3+5+7=16= 4 2 Sum of first 5 odd  numbers: 1+3+5+7+9 = 25 = 5 2 Sum of first n odd  numbers: 1+3+5+7+9+. . . . .  n numbers= n 2 Now we will see average: Average of first 2 odd numbers= (1+3)/2                                                           = 4/2                                                                 =2 Average of first 3 odd  numbers= (1+3+5)/3                                                           = 9/3                                                                 =3 Average of first 4 odd  numbers= (1+3+5+7)/4                                                           = 16/4                                                                 =4 Average of first 5 odd numbers= (1+3+5+7+9)/5            

LOGIC BEHIND MAGIC SQUARE

Assume a magic square of 3x3 A B C D E F G H I The above figure shows a 3x3 magic square. In the magic square sum of colum, row, diagnol numbers should be same A+B+C=D+E+F=G+H+I=A+D+G=B+E+H=C+F+I=A+E+I=C+E+G=sum A+B+C D+E+F G+H+I A+D+G B+E+H C+F+I A+E+I C+E+G By  seeing the  above there is 8 type of sum is available. Row wise-3,  column wise-3, diagnol wise-2. Condition#1: There are 8 different combinations are there with same sum in a magic square. In the above 8 combinations A=2 times, B= 3 times, C= 2 times, D=3 times E=4 times, F=3 times, G=2 times, H=3 times, I= 2 times Hence the above forms the condition#2. In simply condition#2, middle number E appears 4 times in 8 combinations. Hence row, column, diagnol sum should be equal. In 3x3 magic square we are taking numbers from 1 to 9. From 9 numbers we need to take 3 numbers. From combination f

average of first n natural numbers

The natural numbers are 1,2,3,4,5,. . . . . . now we will see the sum of natural numbers                       sum of first 3 natural numbers= 1+2+3=6 the above can be written as                      sum of first 3 natural numbers= 1+2+3=6=3(3+1)/2                      sum of first 4 natural numbers= 1+2+3+4=4(4+1)/2                      then sum of n natural numbers=1+2+3+......n terms=n(n+1)/2 then the average formula = sum of elements/no of elements                     the average of n natural numbers= sum of elements/ no of elements                                                                         =(n(n+1)/2)/n                                                                         =n(n+1)/2xn                                                                         =(n+1)/2   THE AVERAGE OF FIRST N NATURAL  NUMBERS=(n+1)/2 The average of first 5 natural numbers                                  sum of 5 natural numbers=1+2+3+4+5=15