Of course not! That would be like speed balling your child i know no doctor in there right mind would say "It's fine to take adderall and melatonin at the same time"
Speed of light is faster than speed of sound.
Speed Devils happened in 1999.
Jungle Speed happened in 2009.
The Need for Speed happened in 1994.
Speed Freaks happened in 1999.
Speed Kings happened in 2003.
Live for Speed happened in 2003.
Smoke a blunt.
when there is change of speed
That doesn't make sense. What do you mean, what will happen? Happen to what..?
The cannon would want to move backwards with the same speed as the ball wants to move forward.