To analyze the characteristics and performance of the brakes on a 1500 kg car, researchers collected
the data shown in the table above. It shows the
car's speed when the brakes are first applied and
the corresponding braking distance required to
stop the car. The magnitude of the average
braking force on the car is most nearly

their crystal patterns have been disrupted by stress

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s

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.