What is kinematics ??? don't explain !! .-.

koii zinda hai ??
only Indians answer -,-
xD​

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Which governments provide garbage collection services to homes and businesses