One dimensional problems

Differentiate between dimensional and non-dimensional variables.

Which one of the following physical quantities is a dimensional variable?

Which one of the following is a two dimensional covalent solid?

Show that coefficient of restitution for one dimensional elastic collision is equal to one?

In one dimensional elastic collison of equla masses, the velocities are interchanged. Can velocities ina one dimensional collision be interchanged if the masses are not equal?

For the one dimensional motion, described by x=t-sint

The one - dimensional motion of a point particle is shown in the figure. Select the correct statement

Which one of the following gives the dimensional formula of coefficient of friction?

Which of the following graphs cannot represent one dimensional motion of a particle?