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Vector Concepts (15 marks) 1. Express as a as a single vector. NG + DI - NI + AD (2) 2. A 5 kg box is resting on a ramp inclined at an angle of 20 to the horizontal. Determine the force of friction that would be in place if the box was stationary on the ramp. (3) 3. The water in the Pawsy River flows at 3.5 km/h. A boat travels at a speed of 20 km/h. The boat heads upstream at 40 to the bank. Determine the resultant vector. (5) 4. The three vectors are being applied to an object as displayed in 50 N 15 N the diagram on the right. Use horizontal and vertical 20 components to determine the resultant vector. (5) 30 30 N