1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vlabodo [156]
3 years ago
15

A particular gun (10kg) is able to fire 20 gram bullets at a speed of 350 m/s. From this information, calculate roughly how much

energy contained in the powder in the bullet (Hint: you will need to calculate the recoil speed of the gun.) A. 2455 J B. 620 J C. Cannot be determined. D. 1230 J
Physics
1 answer:
lakkis [162]3 years ago
7 0

Answer:

The answer is

D. 1230j

Explanation:

When a bullet is shot out of a gun the person firing experiences a backward impact, which is the recoil force, while the force propelling the bullet out of the gun is the propulsive force

given data

Mass of gun M=10kg

Mass of bullet m=20g----kg=20/1000 =0.02kg

Propulsive speed of bullet = 350m/s

Hence the moment of the bullet will be equal and opposite to that of the gun

mv=MV

where V is the recoil velocity which we are solving for

V=mv/M

V=0.02*350/10

V=7/10

V=0.7m/s

The energy contained in the bullet can be gotten using

KE=1/2m(v-V)²

KE=1/2*0.02(350-0.7)²

KE=1/2*0.02(349.3)²

KE=1/2*0.02*122010.49

KE=1/2*2440.20

KE=1220.1J

roughly the energy is 1230J

You might be interested in
A 675 kg car moving at 15.7 m/s hits from behind another car moving at 9.6 m/s in the same direction. If the second car has a ma
Maslowich

Answer:

?!?!?!?!?!?!

Explanation:

?!?!?!?!?!?!?

3 0
3 years ago
Light travels fastest when moving through
vitfil [10]
A vaccum unlike sound,light can travel through any matter including a great vacuum of nothing (space) 
4 0
3 years ago
I WILL MARK U BRAINLIEST IF U ANSWER THIS QUESTION! NEED IT ASAP PLS
Anuta_ua [19.1K]
  1. One common use of a convex mirror is as shaving mirror.
  2. One common use of convex mirror is as rear-view mirrors in automobiles vehicles.

<h3>What is a concave mirror?</h3>

A concave mirror is also referred to as a converging mirror and it can be defined as a type of mirror that is designed and developed with a reflective surface that is typically curved inward and away from the source of light.

Basically, one common use of a convex mirror include the following:

  • Shaving mirrors
  • Searchlights
  • Dental mirrors.

<h3>What is a convex mirror?</h3>

A convex mirror is also referred to as a diverging mirror and it can be defined as a type of mirror that is designed and developed with a reflective surface that typically bulges outward toward the source of light.

Basically, one common use of convex mirror is as rear-view mirrors in automobiles vehicles.

Read more on convex mirror here: brainly.com/question/24175067

#SPJ1

8 0
2 years ago
if a car is traveling at an average speed of 60 kilometers per hour, how long does it take to travel 12 kilometers?
VashaNatasha [74]
Im sure its twelve minutes
5 0
3 years ago
Why does a ball accelerate as it rolls down a hill?
Anika [276]
The ball accelerates because of gravity.
6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the difference in energy between a beta particle at rest and one traveling 0.35c?
    6·1 answer
  • Whats the difference between relative dating and absolute dating
    5·2 answers
  • What speed is a car going if it takes 2 hours to go 80 miles?
    6·2 answers
  • Problem 6: A rocket accelerates upward from rest, due to the first stage, with a constant acceleration of a1 = 94 m/s2 for t1 =
    11·1 answer
  • In Florida, the standard defined speed limit in a residential area is ____ mph.
    6·1 answer
  • How do the nuclei of covalently bonded atoms help keep the bond together?
    13·2 answers
  • How are force, mass and acceleration related?
    15·1 answer
  • HELP PLZ QUICK HELP PLZ QUICK HELP PLZ QUICK HELP PLZ QUICK
    7·2 answers
  • How do you find speed of a ball at maximum height
    13·1 answer
  • Flow of electrical current in a wire is analogous to the flow of water in a pipe. True False
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!