4. Student A tosses Student B, who is carrying Student C, into the air at 10km/h [Up]. Student B, while going upwards, then tosses Student C 15km/h [Up]. Is Student B moving the same speed relative to Student A and relative to Student C? Briefly explain. (2 marks) PN 5. Given vector g = -i+ 3j - 2k a) Sketch g (1 marks) b) Find g (2 marks) V c) Determine a vector perpendicular to g and check that it is perpendicular. (2 marks) X 1 1