can you please help me

Question

Many states have banned texting while driving because it is dangerous, but many people do not think that texting for a few seconds is that harmful. Suppose you are driving 60 miles/hour. You take your eyes off the road for 4 seconds. How many feet will you travel in that time? Show your work on paper and use dimensional analysis.

Round to the nearest foot.

A projectile is fired at 694 mi/hr. How fast is that in meters per second? Use dimensional analysis, and the fact 1 mile = 1609.34 m. Round your answer to the nearest whole number.

Answer 1

60 mph

= 60(5280)/3600 miles per second

= 88 feet per second

in 4 seconds, that's 4(88) =352 feet

694 mph=

694(1609.34)/3600

=310.2449889 m/s

= about 310 meters per second

actually a closer approximation is 1 mile = 1609.344 meters

using that conversion rate

694(1609.344)/3600

= 310.2457

= about 310 m/s