What do you mean? kinematic equation? You mean the Ek =1/2mv^2 and 1/2mv0^2 and the Ep=mgh stuff?
Couldn't figure out how to type the mv thingy with the start speed v0 and also put it as ^
Actually I didn't pay attention in the first physics I had so I am very bad on these formulas. Never...
If I throw a ball vertically in the air and catch it again at the exact same height after 3.6 seconds. (looking away from air resistance)
So the question is: 1. How big is the starting speed? (v0) And how far in the air would the ball go?
2. If we were not to catch the ball it would've hit the...
I really don't understand this example:
A feather or spring or whatever it's called got the stiffness 29.5 N/m. It is lying inside a horizontal tube (feather cannon). The feather /spring is connected in the very end of the tube. The feather / pring is as "long" as the tube if it's not being...