Question 998773
29 mph = 42.5 f/s

Initial vel u .....42.5 
time = 7.5 s.....t
distance = 385 ft ....s

s= ut + 1/2 a t^2

385 = 42.5*7.5+ 1/2 a*7.5^2

385 = 318.75 +1/2 *a *56.25

328.75 = 1/2 *56.25 *a

a= 11.69 ft/s*2

v=u +at

v= 42.5+11.69*7.5

= 130.175 ft/s