What is the average speed of the marble as it rolls across the floor?
a.
150 m/s
b.
15 m/s
c.
0.67 m/s
d.
1.5 m/s

What is the momentum of a 2 kg object moving at 15 meters per second

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

Which lists the fundamental forces in order, from strongest to weakest? strong nuclear, weak nuclear, electromagnetic, gravitational strong nuclear, electromagnetic, weak nuclear, gravitational gravitational, weak nuclear, electromagnetic, strong nuclear electromagnetic, gravitational, strong nuclear, weak nuclear