Problema Solution
Kingda Ka in New Jersey is the tallest and fastest roller coaster in the world. Riders travel at an average speed of 61 feet per second for 3118 feet. They reach a maximum speed of 187 feet per second. If x represents the total time that the roller coaster is in motion for each ride, write an
expression to represent the sitation. how long is the roller coaster in motion?
Answer provided by our tutors
since distance = time*avg.speed we have
3118 = x*61
61x = 3118 divide both sides by 61
x = 3118/61
x = 51.11 s
the roller coaster is in motion for 51.11 seconds.