Free fall with an initial horizontal velocity is also called: a.
parabolic motion
c.
kinematic motion
b.
projectile motion
d.
all of the above

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b.refraction c.diffraction d. interference

In science and physics what is the standard unit of measure for speed?