Two particles, A and B start moving from the same point at the same time. Particle A moves 108 cm on the first second, 104 cm on the second second, 100 cm on the third second and this is continued. Particle B moves y cm on the first second and reduces 2 cm for each subsequent seconds. Both of them stop at n seconds. Calculate, (i) the value of n
(ii)the value of y
(iii) the difference between the distance travelled by particles A and B when they stopped.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column