The speed limit on many u. s. highways is 70 mi/hr. convert this speed into each alternative unit. express your answer using two significant figures.
a)km/day
b)ft/s
c)m/s
d)yd/min

Select the correct answer from each drop-down menu. to make a table of the elements, dmitri mendeleev sorted the elements according to their . he then split the list of elements into several columns so that elements beside each other had similar .