Question

A rock dropped on the moon will increase its speed from 0m/s to 8.15 m/s in 5 seconds what is the acceleration of the rock

Answer 1

speed Δv = v₂ = 8.15ms⁻¹

v₁ = 0ms⁻¹

time =t = 5s

acceleration = a = speed / time taken

a = Δv / Δt ( as Δv = v₂ - v₁)

a = 8.15ms⁻¹ / 5 s

a = 1.6ms⁻²