A bowling ball has a mass of 8.0 kg and is travelling with a momentum of 16.0 kg-m/s. What is the velocity of
the bowling ball?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?