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A 1317.9 kg car is coasting along a level road of 33 m/s. A constant breaking force is applied,such that the car is stopped in a distance of 63.7 m. What is the magnitude of the breaking force? Answer in units of N.

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A 12000 kg sailboat experiences an eastward force 28300 N due to the tide pushing its hull while the wind pushes the sails with a force of 75900 N directed toward the northwest (45 degrees westward of North or 45 degrees northward of West). What is the magnitude of the resultant acceleration of the sailboat? Answer in units of m/s^2.

What is the direction of the boats acceleration? Answer in units of degrees (N of West).

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I'm not sure what equations to use on these problems. Any help?