Explanation:
1) speed of bicycle = [tex]\frac{distance}{time}[/tex]
speed of bicycle= [tex]\frac{20}{2}[/tex]
speed of bicycle = 10 miles/hour
2)speed of rocket = [tex]\frac{distance}{time}[/tex]
speed of rocket= [tex]\frac{9000}{12.12}[/tex]
speed of rocket= 742.57 meter/second
3)speed of jet plane = [tex]\frac{distance}{time}[/tex]
speed of jet plane= [tex]\frac{528}{4}[/tex]
speed of jet plane= 132 meter/second
4)speed = [tex]\frac{distance}{time}[/tex]
time = [tex]\frac{distance}{speed}[/tex]
time of trip= [tex]\frac{350}{80}[/tex]
time of trip = 4.375 hour
5) Distance = speed × time
Distance = 6 × 3 × 60
Distance = 1080 meter
6) Average speed = [tex]\frac{total distance}{total time}[/tex]
Average speed = [tex]\frac{816}{10}[/tex]
Average speed = 81.6 km/hour
7) Time = [tex]\frac{Distance}{speed}[/tex]
Time = [tex]\frac{450 \times 1000}{120}[/tex]
Time = 3750 m/s
