1. A roller coaster's velocity at the top of the hill is 5 m/s. Five seconds later it reaches the bottom of the hill with a velocity of 30 m/s. What is the acceleration of the coaster?
Can you help with both?

Iagree c would be the answer

So since the snail is moving at 3.6  miles per hour you multiply by 5280 to change it into feet per hour. so you get 36*528 ft per hour. since there are 3600 seconds in an hour, you divide 36*528 by 3600. so simplifying we get 528/100 which is 5.28 ft per second