A physics student throws a softball straight up into the air with a speed of 6 m/s. how high does the ball rise (i just want a explanation)

Which of the following is an example of units for speed

What are similarities and differences between refraction, reflection, diffraction and absorption?

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.