A particle moves from x₀ = 30 cm to x = -40 cm in 5 s. The average velocity of the particle during this time interval is A) 2 cm/s. B) -2 cm/s. C) 14 cm/s. D) -14 cm/s. E) 300 cm/s.

Question

Quizplus · Accepted Answer

The change in position of the particle is:

Δx = xFinal - xInitial = (-40 cm) - (30 cm) = -70 cm

The average velocity is given by:

avg. velocity = Δx / Δt

where Δt is the time interval:

Δt = 5 s

Therefore:

avg. velocity = (-70 cm) / (5 s) = -14 cm/s

The answer is choice D.

A Particle Moves from X0 = 30 Cm to X

A Particle Moves from X₀ = 30 Cm to X