Newton's Laws of Motion

Motions are defined as the change in position of an object. According to the Columbian Electronic Encyclopedia “the rate of change is the speed of the body. If the direction of motion is also given, then the velocity of the body is determined.” (Columbian Encyclopedia, 1993).

Another example of the law of inertia is a baseball getting hit by a bat. This is also an example of Newton’s first law because the ball is thrown out of the pitcher’s hand and is in motion. The batter swings the bat and then hits the ball causing it to be acted on by an outside force. If the batter perhaps swings and misses, than the

about this, because gravity generally keeps that sort of thing from happening. The thing is,

The purpose of this first climb is to build up potential energy. The concept of

These principles include conservation of energy, conservation of momentum, and ideas about forces that are vital in the production of any engineering device. When one object hits another in a Rube Goldberg machine, this is an example of the conservation of momentum occurring. Conservation of momentum says momentum is neither created nor destroyed, it only moves from one object to another. This is easiest to see when a ball bearing is used in a Rube Goldberg device, because ball bearings or marbles hit each other cleanly, and transfer the momentum in an elastic, clear way.

The purpose of this experiment was to investigate the effects of different masses hoisted by an electric motor from ground level to a height of 1.29 m. The main purpose was to look how a change in mass affected the efficiency of our motor, but it did affect other variables such as power, current, force, etc. For this experiment, our hypnosis is that as mass increases, the efficiency increases. Because in the equation for efficiency, efficiency=gain in potential differenceelectrical energy used, gain in potential difference = mgh, the mass of an object has a direct relationship with the efficiency of the motor. In this equation, we see that efficiency is affected by the mass that is lifted, gravity, the height the mass is being lifted, and the amount of energy that is put into the system. We can see that mass, gravity, and height has a direct relationship while inputted power has an inverse relationship with efficiency.

Newton’s first law, often called the law of inertia, says that a moving object will continue moving in a straight line at a constant speed, and a stationary object will remain at rest unless pushed. This means that all objects resist changes in their state of motion. In the absence of an unbalanced force, an object in motion (the hockey puck) will maintain this state of motion. Newton’s second law says the acceleration produced on a body by a force is proportional to the magnitude of the force and inversely proportional to the mass of the object. In simpler terms, this means the greater the force, the greater the acceleration; but the more massive the object being acted on by a given force, the smaller the acceleration. Newton’s third law says that or every action there is an opposite reaction. That is to say that whenever an object pushes another object it gets pushed back in the opposite direction equally hard.

10. A scooter and a rider together have a mass of 275 kg. If the scooter slows with an acceleration of -4.50 m/s².

recorded how far the items travelled. This showed me how Newtons Three Laws of Motion

This means nothing can move itself; an object in motion has to be set into motion by another object in motion.

Hydroelectric is a form of energy it is a renewable resource. Hydroelectricity is the most important and widely used renewable source of energy. Hydroelectric relies on water, which is clean and renewable energy source. Renewable energy comes from natural resources. Non-Renewable energy source includes coal, oil and natural gas. Water is renewable because water continually recycles itself. To harness energy from flowing water, the water must be controlled; a large reservoir is created, usually by damming a river to create an artificial lake or reservoir. Water is channeled through tunnels in the dam. The energy of water flowing through the dam causes the turbines to turn and make the

The shorter the intervals the greater the force. The 20ms interval causes the greatest force.

1. Why does the force begin to decrease with time? Note that a decrease in force indicates muscle fatigue.

One resource that is essential to produce electricity is renewable energy. Providing one’s own energy consists of utilizing solar panels, wind turbines and micro hydroelectricity. Solar panels absorb energy from the Sun to produce solar energy. A great number of people who live off the grid use solar power. Wind turbines generate electrical power from the wind and functions in the reverse manner as a fan does. Micro hydroelectricity is another source of energy, which fascinatingly “uses a source of running water, like a stream, to generate electricity” (Dunn 3). Between all three sources of renewable energy, micro hydroelectricity is the most efficient, reliable and commonly used form.

Explanation: This all happens because of the formula, Force = Mass X Acceleration. So physically when extra mass is added, the force will increase (e.g. 20 N = 2/m^2 x 10 Kg > 10 N = 2/m^2 x 5 Kg)