a) What happened if fluid
frictiondoes not exist in the Sea?
b) In which type of frames Newton’sLaws are
c) Can we say that a reference
frameattached to the surface of the earth is an inertial
referenceframe? Give your argument.
d) It is often said that Newton’sfirst and
second laws imply that it is impossible to use the lawsof mechanics
to tell if you are standing still or moving with aconstant velocity
Q.2:. A 6-kg box on a frictionless horizontal surface
isattached to a horizontal spring with a force constant of 800N/m.
Ifthe spring is stretched 4 cm from its equilibrium length, what
isthe acceleration of the box?