Science homework question help!! #5?

Question

for both of these questions.. my teacher wants us to make somesort of chart to figure it out that i dont understand. could you show that too because he wants use to "show our work". help me please!

1. john kicked the ball 200 ft in 4 sec. how fast is this in mph?

2. hellen kicked the ball 400 miles/hour. how fast in inches is this per year? ( for this one he said the answer is in scientific notation.... just so you know thats also inquired)

thanks =]

Answer 1

1.  200ft/4sec x 1mi/5280ft x 60sec/1min x 60min/1hr = 34.10 mi/hr

2. 400mi/hr x 63360 in/1mi x 525600hr/1yr = 1.33 x 10^13 in/yr