What do forces always come in

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.

Since forces result from mutual interactions, the water must also be 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. Since forces result from mutual interactions, the air must also be 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 that spin. As the wheels spin, they grip the road and push the road backwards. Since forces result from mutual interactions, the road must also be 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. Action-reaction force pairs make it possible for cars to move along a roadway surface. While driving down the road, a firefly strikes the windshield of a bus and makes a quite obvious mess in front of the face of the driver.

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. There is absolutely no doubt this law of physics is verifiable, based on measureable physical examples.

I am not a philosophy student. I do not spend hours pondering equal and opposite action-reaction, but I think I could present a compelling argument the law is manifest no matter how I view reality.

In July , my former employer unceremoniously downsized and eliminated my position as managing editor for several of its publications. One day I was working away on award winning publications.

The next day I was signing paperwork to receive payment for my accrued vacation time or personal time off PTO and toting a brown cardboard box with my belongings out of the door. Accepted Answer: a To row a boat, the boatman pushes the water backwards with the help of oars.

This reaction force pushes the boat in forward direction. Boats have been rowed backward because the human body has its muscle power concentrated in the back muscles, shoulders, and biceps. This makes pulling a more efficient motion than pushing, meaning the rower becomes less fatigued, more energy is transferred to the oars, and the vessel travels farther with each stroke. So if boatman wants to move the boat ahead in water, he has to push the water backwards.

By pushing the water, boatman applies a force on water in backward direction.