Answer:
acceleration = 4 m/sec²
Explanation:
Acceleration is defined as the change of velocity over time
Therefore, it can be calculated as follows:
acceleration = Δv / Δt
where:
Δv is the change in velocity = v2 - v1 = 15 - 7 = 8 m/sec
Δt is the change in time = 2 seconds
Substitute with the givens in the above equation to get the acceleration as follows:
acceleration = [tex] \frac{8}{2} = 4[/tex] m/sec²
Hope this helps :)
