Consider a snooker ball, with a mass of 0.07kg, rolling along a table at a speed of 4.1m/s. it hits a side cushion of the snooker table in a head-on elastic collision. if the ball and cushion are in contact for 72 milliseconds, what is the size of the net force applied to the ball during this collision, in newtons?

In a system, when potential energy decreases, then entropy also decreases. true false

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?