Answer:
2.5m/s²
Explanation:
Given the following:
Initial velocity u = 0m/s
Final velocity v = 20m/s
Time t = 4s
Required
average acceleration over this time in time interval
Using the equation of motion
v = u + at
10 = 0 + a(4)
10 = 4a
a = 10/4
a = 2.5m/s²
Hence its average acceleration over this time in time interval is 2.5m/s²
