Question

Two particles having position vectors r1=3i+5j and r2

Answer 1

Explanation:

This is your answer and piz do follow me

Answer 2

Question:

Two particles having position vectors r1=(3i+ 5j)m r2= (-5j- 3j)m are moving with velocities v1 = (4i +3j )m/s and v2=(ai +7j)m/s .if they collide after 2 seconds ,the value of 'a' is

Explanation:

According to the condition of collision,

    V 2/1 = R 1/2 / time

    v₂ - v₁ = r₁ - r₂ / t

   (a - 4 )i + 4j = 8i + 8j / 2

  (a - 4 )i + 4j  = 4i +4 j

                   a = 8i

                  Hope you understand

This is Habel sabu .............Isn't it the Brainliest...............