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
goldenfox [79]
3 years ago
5

A 7.5 kg cannon ball leaves a canon with a speed of 185 m/s. Find the average net force applied to the ball if the cannon muzzle

is 3.6 m long.
Physics
2 answers:
Ksju [112]3 years ago
8 0

Thhhhhhhhhhhhhhhhhhhhhhhhheeeeeeeeeeeeeeee answer is 1.56

Nastasia [14]3 years ago
5 0

Answer:

F=35651.04N

Explanation:

Let's start writing all the data from the question.

We have the mass ''m'' of the cannonball :

m=7.5kg

We have the final speed ''Vf'' of the cannonball :

Vf=185\frac{m}{s}

And we have '' Δx '' which is the total distance that the cannonball travelled inside the cannon muzzle :

Δx = 3.6m

If we want to find the average net force applied to the ball, we need to find the acceleration of the cannonball (because we already have the mass of the cannonball).

We can use the following equation in order to find the acceleration :

Vf^{2}=Vi^{2}+2.a.Δx (I)

Where ''Vi'' is the initial speed.

Where ''a'' is the acceleration

If we replace all the data in the equation (I) (And assuming Vi=0 because that is the initial speed of the cannonball before the cannon is shot) :

(185\frac{m}{s})^{2}=0^{2}+2.a.(3.6m)

a=\frac{34225\frac{m^{2}}{s^{2}}}{(2).(3.6m)}=4753.47\frac{m}{s^{2}}

a=4753.47\frac{m}{s^{2}}

Now, we can use the Newton's second law of motion to find the force ''F''

F=m.a

F=(7.5kg).(4753.47\frac{m}{s^{2}})

F=35651.04N

Where ''N'' is the unit Newton a force unit.

We find that the average net force applied to the ball is F=35651.04N

You might be interested in
if researchers hit a sheet of metal with a yellow light and nothing happens, what color should the try next?​
Nataliya [291]

The photoelectric emission is possible if the wavelength of the incident light is less than that of yellow light

3 0
3 years ago
6. A satellite is orbiting Earth just above its surface. The centripetal force making the satellite follow a circular trajectory
Svetllana [295]

Answer:

Engular velocity: w=1,24*10^{-3}/s

Linear velocity: V=7905 m/s

The time it takes:

t=5060s=84min

Explanation:

The magnitude of the centripetal acceleration can be related to the angular velocity and radius as:

(1)a=r*w^{2}

Solving for w:

(2)w=\sqrt{\frac{a}{r} }

Replacing a=9,8m/s2 and r=6,375,000m:

(3)w=\sqrt{\frac{9,8m/s^{2}}{6375000m} }=1,24*10^{-3}/s

And the angular velocity relates to the linear velocity:

V=w*r=1,24*10^{-3}/s*6375000m=7905 m/s

The perimeter of the orbit is:

P=\pi *2*r=\pi *2*6375000m=40.05*10^{6}m

The time it takes:

t=\frac{P}{V} =\frac{40.05*10^{6}m}{7905 m/s}=5060s=84min

5 0
3 years ago
ILL MARK BRAINLIEST <br>PLEASE HELP <br>2.Write the formula associating energy with power ​
bekas [8.4K]

Answer:

The formula for potential energy depends on the force acting on the two objects. For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.

Explanation:

Sub to Beast_Building on yt

7 0
2 years ago
did anyone do the, kinetic energy lab report in physics?? plzzz help a girl outttttttt i need answerss????ill give you as much b
Tema [17]

Answer:

yes

Explanation:

8 0
2 years ago
How is frame motion used to measure motion
Mice21 [21]

Answer:

To describe motion accurately and completely, a frame of reference is necessary. frame of reference ( or reference frame) consists of an abstract coordinate system and the set of physical reference points that uniquely fix ( locate and orient ) the coordinate system and standardize measurements within that frame.

Explanation:

The different observations occur because the two observers are in different frames of reference. A frame of reference is a set of coordinates that can be used to determine positions and velocities of objects in that frame; different frames of reference move relative to one another.

8 0
2 years ago
Other questions:
  • If an object starting from rest and position d o = 0 attains a velocity of 20 m/s at d = 50 m, calculate the acceleration requir
    9·1 answer
  • An object has a kinetic energy of 268 j and a momentum of magnitude 22.4 kg·m/s. find the speed and the mass of the object.
    14·1 answer
  • A man pushes on piano with mass 170 kg; it slides at constant velocity down a ramp that is inclined at 20.0 ∘ above the horizont
    11·1 answer
  • __________ is a severe condition that occurs from extreme exposure to the sun.
    8·2 answers
  • A tortoise and a hare engage in a race. A tortoise can run with a speed of 0.15 m/s. A hare can run 25 times as fast as the tort
    10·2 answers
  • Give a specific example of a machine,and describe how its mechanical efficiency might be calculated
    13·1 answer
  • 2 Grade 11 Physics Questions. Will Mark BRAINLIEST!!!
    13·2 answers
  • A cart of mass M = 2.40 kg can roll without friction on a level track. A light string draped over a light, frictionless pulley c
    13·1 answer
  • A physics student swings a tennis ball connected to a rope in a vertical circle with a constant speed of 6.29 m/s. The ball has
    13·1 answer
  • A 15.0 Ohms resistor is connected in series to a 120V generator and two 10.0 Ohms resistors that are connected in parallel to ea
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!