Let the acceleration of the system is a and the time to
reach 60 mph is t, so
ax = (μs - μr) * g
ax = (1.00-0.80) (9.8 m/s2) = 1.96 m/s2
Then I used acceleration in this equation:
vf = vi + ax * t
60 mph = 0 mph + (1.96 m/s2) t
t = (60 mph/1.96 m/s2)(0.447 m/s / 1 mph)
t = 13.68 s
Greater or more acceleration
i guess that would be false cause ...
the elements in periodic table are arranged by atomic number which is basically the number of protons
hope that helps :)