how many seconds it takes to travel 1056feet going 42mph?

Answer 1

Use dimensional analysis to ensure that units cancel out. This will almost always guarantee a correct answer.

1056 ft (1 mile/5280 ft) (1 hour/ 42 miles) (60 minutes/ 1 hour) (60 seconds/ 1 hour)= 17.143 seconds

Answer 2

1 mile per hour = 1.4666.... feet per second

42mph = 61.6fps

t=d/v = 1056/61.6 = 17.143s