Question

parametric motion

2. Horizontal Motion: Marissa leaves Las Vegas, Nevada on a train to Dallas traveling 60 mph. Five hours later, a dude, Joe, leaves Dallas to go to Las Vegas in a car that is travelling at 84 mph. Las Vegas and Dallas are 1250 miles apart. a. Write the parametric equations to illustrate the trips. Let x be the distance from Dallas. X2 b. Will Marissa arrive in Dallas before Joe arrives in Las Vegas? _hrs. Joe arrives in hrs. c. Marissa arrives in

Answer 1

2. (a) x1 = 1250 - 60t

x2 = 84 (t - 4)

(B) Joe arrives in las vegas before marissa Arrives in Dallas.

for Marissa : 1250 - 60t = 0

t = 20.8 hrs

for Joe : 84(t - 4) = 1250

t = 18.9 hrs

(C) Marissa arrives in 20.8 hrs and Joe arrives in 18.9 hrs