Question

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

Answer 1

Answer:

A) $2.7\frac{km}{day}$

B) $1.03*10^{2}\frac{ft}{s}$

C) $31\frac{m}{s}$

D) $2.05*10^{3}\frac{yd}{min}$

Explanation:

A) Convert $70\frac{mi}{hr} to \frac{km}{day}$

$70\frac{mi}{hr}*\frac{24hr}{1day}*\frac{1.60934km}{1mi}=2.7\frac{km}{day}$

B) Convert  $70\frac{mi}{hr} to \frac{ft}{s}$

$70\frac{mi}{hr}*\frac{1hr}{3600s}*\frac{5280ft}{1mi}=1.03*10^{2}\frac{ft}{s}$

C) Convert $70\frac{mi}{hr} to \frac{m}{s}$

$70\frac{mi}{hr}*\frac{1hr}{3600s}*\frac{1609.34m}{1mi}=31\frac{m}{s}$

D) Convert $70\frac{mi}{hr} to \frac{yd}{min}$

$70\frac{mi}{hr}*\frac{1hr}{60min}*\frac{1760yd}{1mi}=2.05*10^{3}\frac{yd}{min}$