Answer:
Technician A
Explanation:
camshafts rotate at one-half the crankshaft speed
0.9
h = 400 mm, h' = 325 mm
Let the coefficient of restitution be e.
h' = e^2 x h
325 = e^2 x 400
e^2 = 0.8125
e = 0.9
The boat will go faster.