Its 21!! sorry i was late! :)
The ball drop 2kms in the air
Point C. at this point, which is the highest point, all of the ball’s energy is gravitational potential energy.
The relationship between the initial velocity, final velociy, distance, and deceleration can be expressed in the following equation.
2(a)(0.270 m) = 0² - (5.70 m/s)²
The value of a (which is the deceleration) is 0.06 m/s². Thus, the answer is that the deceleration value is approximately 0.06 m/s².
