Physics: An 8.7 g bullet is accelerated in a rifle barrel 105 cm long to a speed of 465 m/s. use the work-energy theorem to find the average force exerted on the bullet while it is being accelerated. answer in units of n.

An 8.7 g bullet is accelerated in a rifle barrel

Ответ:

dollar6219

11.01.2022

Physics

896 N

Explanation:

Given

mass of bullet m=8.7 gm

Length of barrel d=105 cm=1.05 m

final velocity v=465 m/s

initial velocity u=0 m/s

Work done by all the forces is equal to change in kinetic Energy

$F\cdot d=\frac{1}{2}\times mv^2-0$

$F_{avg}\times 1.05=\frac{1}{2}\times 8.7\times 10^{-3}\times 465^2$

$F_{avg}=\frac{0.5\times 8.7\times 10^{-3}\times 465^2}{1.05}$

$F_{avg}=895.789 Na\pprox 896 N$

0,0(0 оценок)

Ответ:

whocares1234

02.08.2021

Physics

So for the first one the answer is : 0.92 * 100 = 92
the second one the answer is 8.80 :)
and for the third one the density is 7.5
i hope this is helpful
have a nice day

0,0(0 оценок)

An 8.7 g bullet is accelerated in a rifle barrel 105 cm long to a speed of 465 m/s. use the work-energy theorem to find the average force exerted on the bullet while it is being accelerated. answer in units of n.

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Physics

Ask an AI advisor a question