A particle at t1 = -1.4 s is at x1 = 3.6 cm and at t2 = 4.5 s is at x2 = 8.5 cm. What is its average velocity?

Answer 1

total distance: 8.5-3.6 = +4.9 cm
total time: 4.5 - (-1.5) = 6.0s
avg velocity: +4.9/6.0 cm/s