hello! I realllly need help with this, thank you

Write full solutions on a separate sheet of paper. Submit a photo or scan. 1. Vector u dot vector u = 15,000. What is the magnitude of vector u? [1 mark] 2. A pilot wishes to fly an aircraft with a ground velocity of 300km/h at a bearing of N 68 W (to head directly toward the destination). There is a 60 km/h wind from the direction of $30W. Calculate the heading and airspeed that the pilot should use to achieve his desired ground velocity. Include a diagram. [4 marks] 3. Determine a vector that is perpendicular to both [2,3,-2] and [-1,5,6] and is 10 units long. [4 marks] Key Concepts: To find the angle, 0, between two Cartesian vectors it and v, use the formula cose = 10.v For two vectors i and i with an angle of 0 between them, the projection of u on it is the vector component of a in the direction of it: projav = \\u cose ( 7) or proint = ( but | projav = | |cose if 0.