Aspring gun is made by compressing a spring in a tube and then latching the spring at the compressed position. a 4.97-g pellet is placed against the compressed and latched spring. the spring latches at a compression of 3.90 cm, and it takes a force of 9.12 n to compress the spring to that point.

Answer

given,

mass of pellet = 4.97 g

the compression distance = 3.90 cm = 0.039

Force to compress the spring = 9.12 N

we know,

F = k x

9.12 = k x 0.039

k = 233.85 N/m

conservation of energy:  

v = 8.41 m/s

b)  conservation of energy:

the answer is kevlar

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge