Define changes in acceleration found on P-T and V-T graphs

PLZ RESPOND FAST ;-;

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?

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 the first law of thermodynamics, triangle e=q-w, what does q stand for