An automobilc manufacturer claims that its product will trouel 0.85 km in 4.9 s,
starting from rest. What is the magnitude
of the constant acceleration required to go
this?
Answer in units of m/s^2.

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.