B) A given vector is represented with an arrow in figure 1.1. State the direction of force and convert the force into Cartesian format. (3 marks) c) A body of mass 10 kg is dropped from a height of 20 m. Calculate;
i) The velocity before heating the ground. (1 mark)
ii) The kinetic energy by the time of heating the ground. (2 marks)
d) Calculate the refractive index of water given that the velocity of light through water is .