# Physics

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A car is towing a boat on a trailer. The driver starts from rest and accelerates to a velocity of +14 m/s in a time of 25 s. The combined mass of the boat and trailer is 401 kg. The frictional force acting on the trailer can be ignored. What is the tension in the hitch that connects the trailer to the car?
I have been trying to work out this problem for like 30 minutes. I've come up with 7859.6, 5894.7, and 3929.8 All of which haven't worked...help?!

• Physics -

v=at =>
a=v/t=14/25=0.56 m/s²
F=ma=401•0.56 = 226.56 N

• Physics -

calculate the work done in raising 7.00kg of iron ore to the surface from a depth of 80m.(take g=10ms-2)

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