Two balls are set to collide on a single track. Ball1 has a mass of 2.13-kg and a velocity of 3.27-m/s

Ball2 has a mass of 2.67-kg and a velocity of 1.27-m/s

After their elastic collision Ball1 is moving at 3.46-m/s in the opposite direction.

How fast is Ball2 Moving?

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.

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.

What do you think car designers do if the damage caused by a crash test is too severe?