Answer:
65 miles/hr
Step-by-step explanation:
v0 + a • t = vf
v0 = initial velocity = 50 miles/hr
a = acceleration = 15 miles/hr/hr
t = time displaced = 1 hr
vf = final velocity
50 miles/hr + (15 miles/hr/hr • 1 hr) = final velocity
65 miles/hr = final velocity