Express  all  answers  in  significant  figures and  scientific notation.    A   man  was  standing  on one  side  of  the  roof  of  a  building 145 meter above  the  ground and  shot  a  projectile with  an  initial  speed  of 53 m/s at  an  angle  of 30.0  degrees  with  the  horizontal.   Find: a)  the  time ( seconds)  it  took the  projectile to  hit  the  ground   b)  how   far (meter) away  from  the  base  of  the  building did  the  projectile  land?   c)  Find  the  vertical  and  horizontal  components  of  the  velocity (m/s)   d)  what  is  its  velocity  in m/s

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Scalars and Vectors

Scalars and Vectors are the classification of physical quantities that are used to denote various terms in physics.