Awater balloon dropped from a window high above the ground falls y = 4.9t2 m in

For the average speed, I multiplied 4.9 by 3 squared to receive 44.1, then divided that by 3 to receive 14.7 m/s. 4.9 X 4.9 X 4.9 = 44.1(Distance traveled / fall time)44.1 ÷ 3 = 14.7 m/s

For the speed at t = 3, I took the derivative of 4.9t2 to make it 2(4.9)t and then plugged in 3 to receive an answer of 29.4 m/s. derivative   =2(4.9)t                    =2(4.9)3                    =29.4 m/s

Impulse of force is a process of reducing and minimizing the impact of force on the object.

Explanation:

If an impact stops the moving object then the change in momentum will become a fixed quantity, extending the time of collision and reducing the time of impact.

For example, If a person jumps to the ground with a certain height the person will bend knees to extend the time of collision while hitting the ground and reducing the time of impact to prevent much injury.