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defon
2 years ago
13

When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force? A) The cannon moving forward B) The

cannonball moving backwards C) The cannon moving backwards D) The cannonball moving forward
Physics
2 answers:
laiz [17]2 years ago
7 0

Answer:

I

will

only

explain

Explanation:

The cannon is fired when an explosive charge is detonated, causing a sudden and immense increase in pressure. Is it not this pressure that causes the rapid acceleration of the cannonball and the recoil of the cannon, not an action–reaction between the cannon and the cannonball?

For purposes of this model, we can consider the expanding gas from the explosion to be part of the cannon, or as an intervening object between the cannon and the ball. So the gasses exert a force on the ball. The ball exerts a force back on the gasses. This is transferred to the cannon.

You could also imagine or build a (toy) "cannon" with a spring mechanism to propel the ball, rather than an explosion. You'd see very similar results.

In any case, the deeper point, which you will soon learn, is that momentum is a conserved quantity. Regardless of what mechanism applies the force on the ball and the cannon, after the ball is flying free the cannon must end up with as much backwards momentum as the ball has forward momentum.

If no cannonball is present when the charge is detonated, then the pressure dissipates much more quickly and the recoil is smaller but still present

Because air and exhaust gasses from the explosion are expelled from the cannon. These gasses have mass and carry momentum, therefore they exert a reaction force on the cannon just as a ball does.

HOPE IT HELPS

<h2> </h2>

<h2><em>it's </em><em>hard </em><em>but </em><em>not </em><em>for </em><em>me</em></h2>

<h2><em>mark </em><em>me </em><em>in </em><em>brainliest </em><em>answers </em><em>please </em><em>please </em><em>please </em></h2>

<h2 />
scoundrel [369]2 years ago
6 0

Answer:

I cant answer too complicated sorry

Explanation:

im sorry for not answering

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How is thermal energy naturally transferred between objects?
Sladkaya [172]

The second law of thermodynamics establishes restrictions on the flow of thermal energy between two bodies. This law states that the energy does not flow spontaneously from a low temperature object T1, to another object that is at a high temperature T2.

For example. Suppose you place your cell phone on the table. Your phone is at a temperature of 40 ° C and the table is at 19 ° C. Then, it is impossible for the table to spontaneously transfer its thermal energy to the telephone, and so that the table gets colder and the telephone warmer.


Finally we can say that the correct option is B: From the hotter object to the cooler object

5 0
3 years ago
HELP
Sliva [168]

The stopwatch will be the most useful in determining the kinetic energy of a 50 g battery- powered car traveling a distance of 10 m.

<h3>What is kinetic energy?</h3>

Kinetic energy is the energy of a body possessed due to motion.

This means that for an object to possess kinetic energy, it must be in motion.

The kinetic energy is measured in Joules, which is a product of the mass of the substance and the time taken to travel a distance.

A stopwatch is an instrument used to measure time as one of the components of kinetic energy.

Therefore, the stopwatch will be the most useful in determining the kinetic energy of a 50 g battery- powered car traveling a distance of 10 m.

Learn more about kinetic energy at: brainly.com/question/12669551

8 0
2 years ago
A skateboarder starts from rest and maintains a constant acceleration of 0.50 m/s² for 8.4 s. What is the rider's displacement d
gregori [183]

Answer:

4.2m/s

Explanation:

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3 0
2 years ago
How much work is done on a 75 newton bowling ball when you carry it horizontally across a 10 meter room
svlad2 [7]

F = force applied to hold the weight of the bowling ball = weight of the bowling ball = 75 N

d = distance through which the bowling ball is moved horizontally = 10 meter

θ = angle between the force in vertically upward direction  and displacement in horizontal direction = 90

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work done on the bowling ball is given as

W = F d Cosθ

inserting the values

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6 0
3 years ago
A2 kg object moves at a constant 5 m/s across a level surface. Determine its kinetic energy.
AURORKA [14]
KE = 1/2mv^2
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KE= 25 J
6 0
3 years ago
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