explain action & reaction with examples?

Answer 1

Imagine you hit someone with a fist. The person you hit feel the impact from your fist (ACTION). But your fist also feel the pain from the REACTION.

You sit on a chair with wheels and push against someone standing. The person moves forward in the direction of the push. But you will also find yourself moving backward from the reaction.

Answer 2

Action Reaction Examples

Answer 3

Newton's third law of motion states"For every action there is an equal and opposite reaction."
EXAMPLES;
1)When we jump on to a still boat in water,it moves away.Here jumping is the action and moving away of the boat is the reaction.
2)When you push a suitcase with your hand,you feel the pressure on your palms.Here pushing is the action and the the pressure you felt is the reaction.
3)When you walk on sand, the sand yields.Here walking is the action and the yielding of the sand is the reaction.
4)When you strike a hammer on a nail, the nail offers some resistance i.e does not go easily into the wall.Here, striking the hammer is the action and resistance by the nail is the reaction.
REMEMBER: ACTION AND REACTION TAKES PLACE SIMULTANEOUSLY ON DIFFERENT BODIES.

Answer 4

The Law; For every action there is an equal and opposite reaction.
Examples: The Jet engine. A balloon with the open end released , the recoil of a gun that is fired, a boat bring propelled with a water jet.

Answer 5

Say you kick a ball, the action of kicking the ball, moved it. The ball, reacted to your kick by moving. If you kicked it really hard, it would have moved really far, and not so far otherwise. Therefore, it has an equal and opposite reaction.

Answer 6

For the best answers, search on this site https://shorturl.im/avTc8

They work the same as a balloon, when the air is released from the open end. When the balloon is inflated the pressure on the inside is equal in all directions. When you open the end the pressure on the open side is released or drops. The pressure that was pushing in the opposite direction, pushes against the wall of the balloon thus pushing it forward. The same thing occurs with a rocket or jet engine. The pressure is developed by heating the air (for a jet) and with explosive gases (for a rocket). one side of the pressure is released and the opposite pressure pushes the craft.

Answer 7

There are two forces resulting from this interaction - a force on the chair and a force on your body. These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is:

"For every action, there is an equal and opposite reaction."
The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.

A variety of action-reaction force pairs are evident in nature. Consider the propulsion of a fish through the water. A fish uses its fins to push water backwards. But a push on the water will only serve to accelerate the water. In turn, the water reacts by pushing the fish forwards, propelling the fish through the water. The size of the force on the water equals the size of the force on the fish; the direction of the force on the water (backwards) is opposite the direction of the force on the fish (forwards). For every action, there is an equal (in size) and opposite (in direction) reaction force. Action-reaction force pairs make it possible for fish to swim.

Consider the flying motion of birds. A bird flies by use of its wings. The wings of a bird push air downwards. In turn, the air reacts by pushing the bird upwards. The size of the force on the air equals the size of the force on the bird; the direction of the force on the air (downwards) is opposite the direction of the force on the bird (upwards). For every action, there is an equal (in size) and opposite (in direction) reaction. Action-reaction force pairs make it possible for birds to fly.

Consider the motion of a car on the way to school. A car is equipped with wheels which spin backwards. As the wheels spin backwards, they grip the road and push the road backwards. In turn, the road reacts by pushing the wheels forward. The size of the force on the road equals the size of the force on the wheels (or car); the direction of the force on the road (backwards) is opposite the direction of the force on the wheels (forwards). For every action, there is an equal (in size) and opposite (in direction) reaction. Action-reaction force pairs make it possible for cars to move along a roadway surface..

Answer 8

when we hit a door we get hurt because of reaction force given by wall.

Answer 9

Principle of operation (Rocket Engine) Rocket engines give part of their thrust due to unopposed pressure on the combustion chamberClassic rocket engines produce a high temperature, hypersonic gaseous exhaust. This is achieved by the combustion of solid, liquid or gaseous propellant, containing oxidiser and a fuel, within a combustion chamber at high pressure. The hot gas produced is then allowed to escape through a narrow hole (the 'throat'), into a high-expansion ratio nozzle. The effect of the nozzle is to dramatically accelerate the mass, converting most of the thermal energy into kinetic energy. The large bell or cone shaped expansion nozzle gives a rocket engine its characteristic shape. Exhaust speeds as high as 10 times the speed of sound at sea level are not uncommon. Part of the rocket engine's thrust comes from the gas pressure inside the combustion chamber but the majority comes from the pressure against the inside of the expansion nozzle. Inside the combustion chamber the gas produces a similar force against all the sides of the combustion chamber but the throat gives no force producing an unopposed resultant force from the diametrically opposite end of the chamber. As the gases (adiabatically) expand inside the nozzle they press against the bell's walls forcing the rocket engine in one direction, and accelerating the gases in the opposite direction. For optimum performance hot gas is used because it maximises the speed of sound at the throat — for aerodynamic reasons the flow goes sonic ("chokes") at the throat, so the highest speed there is desirable. By comparison, at room temperature the speed of sound in air is about 340m/s, the speed of sound in the hot gas of a rocket engine can be over 1700m/s. The expansion part of the rocket nozzle then multiplies the speed of the flow by a further factor, typically between 1.5 and 4 times, giving a highly collimated exhaust jet. The speed ratio of a rocket nozzle is mostly determined by its area expansion ratio — the ratio of the area of the throat to the area at the exit, but details of the gas properties are also important. Larger ratio nozzles are more massive and bulkier, but they are able to extract more heat from the combustion gases, which become lower in pressure and colder, but also faster. A significant complication arises when launching a vehicle from the Earth's surface as the ambient atmospheric pressure changes with altitude. For maximum performance it turns out that the pressure of the gas leaving a rocket nozzle should be the same as ambient pressure; if lower the vehicle will be slowed by the difference in pressure between the top of the engine and the exit, if higher then this represents pressure that the bell has not turned into thrust. To achieve this ideal, the diameter of the nozzle would need to increase with altitude, which is difficult to arrange. A compromise nozzle is generally used and some percentage reduction in performance occurs. To improve on this, various exotic nozzle designs such as the plug nozzle, stepped nozzles, the expanding nozzle and the aerospike have been proposed, each having some way to adapt to changing ambient air pressure and each allowing the gas to expand further against the nozzle giving extra thrust at higher altitude. Jet Engine A jet engine is an engine that discharges a fast moving jet of fluid to generate thrust in accordance with Newton's third law of motion. This broad definition of jet engines includes turbojets, turbofans, rockets and ramjets and water jets, but in common usage, the term generally refers to a gas turbine Brayton cycle engine used to produce a jet of high speed exhaust gases for special propulsive purposes. Jet engines are so familiar to the modern world that gas turbines are sometimes mistakenly referred to as a particular application of a jet engine, rather than the other way around.

Answer 10

Someone makes fun of my mom, they get punched in the face.