Help please

QUESTION 8 x(m) 100 - - - 80 60 40 20 10 20 30 40 50 t(S) The diagram above shows the position x versus time t for a moving particle along straight line. Find the average velocity of the particle in the time interval between 10s and 40s O a. 60m/s O b. 30m/s O c. 2.5m/s O d.2.0m/s O e.-1.75m/s QUESTION 9 The components of a vector are 29.0 and 26.83 units . Calculate the magniyude of the Vector- use 3 significant ficures in normal notation