A plane is accelerated from a speed of 2.0 m/s at the constant rate of 3.0 m/s2 over a distance of 530 m. What is its speed after traveling this distance?

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)