1. Acceleration is a vector whose SI units are m s^-2 and force is a vector whose

SI units are kg m s^-2 (also known as newtons, N). Multiplying an acceleration by a mass yields a force. A force equal to 100 kg times an acceleration of -9.8 m s^-2k is added to a force of -18 kg m s^-2k + 2.0 kg m s^-2i.

1. Express the sum of the forces, called the resultant force, in terms of the unit vectors.
2. Find the magnitude of the resultant force.
3. Find the angle that the resultant force makes with the +x direction, specifying whether it is clockwise or counterclockwise from that direction.