5. Solve the following problem: (2 x 2 = 4 marks)
A car starts from point P, travels 40 km due south and reaches Q, then takes a right
turn and travels another 30 km in a straight line to reach point R. The total time taken by
the car for this journey is 2 h 46 min and 40 s. Calculate the following:
a) Average speed of the car for this journey in m/s.
b) Average velocity of the car for this journey in m/s.