Speed=Distance/time
Speed=60 miles/hour
So in order to find distance
Time is given as 8 second…convert to hours
As one hour=3600seconds
8 second is equal to 8/3600 That is 1/450
So time is 1/450
because speed is in mile per hour
So,
Speed=Distance/time
Distance=Speed *time
Distance=60(mile/hour)*1/450(hour)
Distance=2/15 miles
Convert to feet
If 1 mile=5280 feet
So 2/15 mile is equal to
2/15*5280= 704 ft

Hope this helps!