# In this experiment, I predict that as the force increases, as will the acceleration. Therefore, as the force decreases the acceleration decreases.

## GCSE Science Coursework : Physics

Prediction:

In this experiment, I predict that as the force increases, as will the acceleration. Therefore, as the force decreases the acceleration decreases. I can also predict that the force and acceleration of an object are directly proportional, meaning that if the force was to be doubled, then the acceleration would also double. I can predict this using Newton’s second law of motion.

## Newton’s second Law of motion:

Force      =         Mass x Acceleration

(N)                    (kg)         m/s

(variable)                      (measurement)

In simple terms, this means that if the force is to increase then the acceleration must also increase because the mass multiplied by the acceleration must equal the force.

The equation, like many others can be re-arranged in order to show a possible prediction for the value in m/s  that the acceleration will be the subject of the equation.

Acceleration     =    Force          (Mass / 0.400kg)

Mass

Weight is a force. Weight is quite oftenly confused with mass, however each one differs to the other. Mass is measured in kilograms (kg). The weight of an object only concerns the amount of matter an object is made up of. In contrast to the mass of an object, the weight of an object regards how much it is being pulled down to the centre of the earth through gravity. Weight is a force and is measured in Newtons (N).

## Diagram of apparatus:

The experiment that was carried out occurs when a slider is pulled through two light gates via a weighted pulley upon a soft bed of air to minimalise friction powered by a vacuum connected to the air track.

When the rider breaks the beam produced from Light gate 1, a recording is began by a computer linked up to both light gates. Once the rider cuts through the second light gate, then the timer on the computer steps automatically as the light gates can relay a signal to the computer.

A computer is used rather than the naked eye because the computer can be precise to 2 decimal places (d.p). Once the slide has passed through both light gates, it is moved around both light gates and the experiment is repeated. The variable for this investigation is ...