Final answer:
To find the speed of the ball after 2 seconds, we can use the equation: final velocity = initial velocity + acceleration * time. Given the initial velocity, acceleration, and time, we can calculate the final velocity. The ball is moving at a speed of 22.6 m/s after 2.0 seconds.
Step-by-step explanation:
To find the speed of the ball after 2 seconds, we can use the equation:
final velocity = initial velocity + acceleration * time
Given that the initial velocity is 3.0 m/s, the acceleration due to gravity is 9.8 m/s², and the time is 2.0 s, we can plug in these values:
final velocity = 3.0 m/s + 9.8 m/s² * 2.0 s = 3.0 m/s + 19.6 m/s = 22.6 m/s
Therefore, the ball is moving at a speed of 22.6 m/s after 2.0 seconds.