A point of matter moves from position A(0, 2) cm to point B(0,8) cm in 10 seconds.
What is the average velocity of the motion of the point of matter?
Solution:
We have: r₁ = 2j; r₂ = 8j
The displacement of the point of matter is
∆r = r₂ – r₁
= 8 j – 2 j
Average velocity
v̅ = ∆r = 6j = 0,6 j cm/s
∆t 10