On the first part of a journey, a motorcyclist travels for 1.5 hours at a speed of 65 miles per hour. On the second part of the journey, the motorcyclist then travels for 45 minutes at 50
miles per hour. What was the total distance travelled by the motorcyclist?

98.4 m

explanation:

let s = distance up the plane  

then by conservation of energy  

1/2m(18.3)^2 = mg s sin(10)  

(18.3)^2 = 2g s sin(10)  

s = (18.3)^2/2gsin(10)  

= 98.39564526  

= 98.4 m

they are farther apart, they are moving faster, and they have gained energy.