7. An object accelerates at 10 m/s2 for 3 seconds. If its speed after the end of the acceleration is 65 m/s, what is its speed before the acceleration?
So after one second, the acceleration of the ball is 9.8 m/s² and its velocity is 9.8 m/s. When you throw the ball upward, that acceleration is still 9.8 m/s².
