To determine the velocity after 10 seconds with a constant acceleration of 4 m/s², we can use the equation of motion that relates velocity (v), initial velocity (u), acceleration (a), and time (t):
v = u + a * t
In this case, the initial velocity (u) is 0 m/s since you start from rest, the acceleration (a) is 4 m/s², and the time (t) is 10 seconds.
Plugging in these values into the equation, we have:
v = 0 + 4 * 10
v = 0 + 40
v = 40 m/s
Therefore, the velocity after 10 seconds with a constant acceleration of 4 m/s² is 40 m/s.