Write the following expressions in index notation, and say if its a vector, scalar or matrix

Question

i) a+b

ii) ab

iii)c . ab

iv) a . A

v) A . b

vi) a^2

vii) A^2.b

viii) abc.A.d

ix) Delta . bc

Answer 1

 

1)      A passenger on a boat moving at 1.70 m/s on a still lake walks up a flight of stairs at a speed of 0.60 m/s. The stairs are angled at 45° pointing in the direction of motion as shown in figure below. Write the vector velocity of the passenger relative to the water.