What is transformation of force?​

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

A-of 75 cm by cm by 17.5 cm up. of is 2 kg a , in ,if it is in , kg/?