Answer: 40m/s
Explanation:
Parameters.
Speed = 76m/s
Acceleration = 9m/s2
Time = 4seconds
We know that velocity (V1) = V2 + at
Where V1 is the final velocity, V2 is Initial velocity, a is acceleration but in this case it’s decceleration meaning the value will be negative and t is the time taken.
Therefore, V1 = V2 + a t
V1 = 76m/s + (-9m/s2) (4s)
V1 = 40m/s
Therefore the new final velocity is 40m/s
