The change in velocity between 0.0 s and 4.0 s is determined as - 16 m/s. (Option D).
How to calculate the change in velocity?
The change in velocity between 0.0 s and 4.0 s is calculated by applying the following method.
Δv = Δa × Δt
where;
- Δa is the change in acceleration of the object
- Δt is the change in time of motion of the object
The change in acceleration of the object between 0.0 s and 4.0 s is;
Δa = -4 m/s² - 0 m/s²
Δa = - 4 m/s²
The change in time is;
Δt = 4 s - 0 s
Δt = 4s
The change in velocity between 0.0 s and 4.0 s is calculated as;
Δv = Δa × Δt
Δv = - 4 m/s² × 4s
Δv = - 16 m/s