Johnny and Edward, two students are running against each other. Edward’s mass is 68 kg and is running at 4 m/s. Johnny, 40 kg, is attempting to tackle Edward and stop him. At what velocity should he be running in order to stop Edward?

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

i already answered it by 34/s

answerdmitry mendeleyev made a workable classification of the elements