3. An object with a mass of 5 kg collides with an object with a mass of 4 kg. During the collision, the more massive object accelerates at
a rate of 2 m/s2. What is the acceleration of the less massive object
in m/s2?

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)

You can melt ice by applying pressure because the solid/liquid line has a slope.