You have a distance and a time so you can work out the bikes speed which would be distance/time so 40mph.
When the force on some area is doubled and the area doesn't change,
then the pressure on that area has doubled.
ANSWER:
(a) 1036 N
(b) -1036 N
(c) 2590 N
STEP-BY-STEP EXPLANATION:
Given:
Mc = 1400 kg
Mt = 560 kg
a = 1.85 m/s^2
(a)
Force by car on trailer:

(b)

(c)
I think it’s 8 hours. I’m sorry if I’m wrong.
I just did 400 divided by 50
The speed of the water is the greatest at point B