A ball has 10 Joules of kinetic energy as it reaches the bottom of the hill. Approximately how much potential energy did the ball have at the top of the hill?

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.

The slope of a velocity time graph over any interval of time gives the during that interval

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?