• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Experiment 2: Free Fall

Extracts from this document...

Introduction

Lawrence Lao                                                                                July 4. 2005

Patrick Marayag                                                                                Ms. Macabebe

Ps 15 A

EXPERIMENT 2: FREE FALL

One of the major topics discussed in Physics is the study of free fall, or the effect of the force of gravity on any object. This experiments aimed to investigate the mechanics or the action of gravity an object by analyzing certain vectors related to free fall versus time graphs. These studies on free fall are important if further studies of projectile motion are being made.

The objective of the study is to show that velocity, acceleration and distance are related such that one is actually the slope of the other. The slope of velocity is acceleration. The slope of distance is velocity. Hence, changes in one of the factors involving a certain object, the other related factors are also inevitably altered. This exercise also seeks to prove the constant of acceleration due to gravity.

The first activity utilized the ULI, photogate and Logger Pro systems to analyze graphs for free fall.

...read more.

Middle

0  + V0t – 1/2gt2, or D= V0t – 1/2gt2  .A quadratic equation has a form ax2 + bx + c = 0, where ax2 is –1/2gt2 , bx is V0t, and c is X – X0 which is also the displacement or as scalar quantity, the distance D. The graph of velocity vs. time is a linear equation, in which a slope may be taken by the equation y = mx + b.  Our equation is  V0 = gt. If the derivative of the graph of distance vs. time were taken, the resulting derivative would be the linear graph of velocity vs. time. Furthermore, if the derivative of the graph of velocity vs. time were taken, we would have the graph of acceleration vs. time, which has the equation y = m, or a horizontal graph. This graph is logical for acceleration, since in a free fall, the acceleration of the object is at a constant 9.8m/s2.

The average slope of the graph of velocity vs. time in five trials was taken to compare with the theoretical acceleration of gravity (9.8m/s2).

...read more.

Conclusion

However, the orientation of the graph may be changed. Remember that before jumping, the indicator arrow was flipped upwards. The effect on the graph was it shot downwards at peaks of the jump, and it moved upwards whenever the representative landed. If the indicator arrow is flipped downward, the previous graph will also be flipped. Instead of an increasing positive value as one descends, the meter will read an increasingly negative value. This is simply an indication of the direction of the acceleration., which going down.

In this activity, we have learned the relationships between time, distance, velocity and acceleration. In addition, we are also able to confirm the presence of acceleration due to gravity. Even if the theoretical is 9.8m/s2 , the presence of factors like air resistance lessens this value.

...read more.

This student written piece of work is one of many that can be found in our GCSE Forces and Motion section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Forces and Motion essays

  1. Science Course Work : Free Fall

    How long it takes to reach the floor. 2. I will time from when it reaches terminal velocity to the floor. I experimented with a spinner and found that it is fairly easy to observe when a spinner reaches terminal velocity, it should therefore not be difficult to time how long it takes to reach the floor.

  2. Investigation into the range of a ski jump

    In this case an attempt to improve accuracy only serves to waste time and equipment. Appropriate equipment must be applied in each situation. Accuracy: Accuracy is about reducing errors wherever possible to receive more accurate results. Accuracy of measuring ruler lengths can be increased in the following ways: When reading

  1. Pulley Systems.

    Travelling becomes more expensive as fuel consumption increases order to overcome friction. 5) Parts of machinery wear out due to friction between them as they slide over or rub over each other. 6) Due to friction, in between the moving parts, a lot of heat is wasted.

  2. Determining the Acceleration Due to Gravity

    A thin weight is used so that the surface area, perpendicular to the plane of movement is lower. This is more streamlined and so reduces air resistance giving a more accurate value for g. Plug the light gate into the data logging terminal.

  1. Motion of an object as it slides down a slope at different angles to ...

    However this is hard to measure during the experiment - if I did then it would be very inaccurate. What I will do is to make a systematic correction and find the distances from the centre of mass of the object when calculating the models - by taking the cosine of the angle ?.

  2. In this experiment I aim to find out how the force and mass affect ...

    takes the ball to roll down the ramp; I can work out the acceleration of the ball. I can work this out using the formula below. Change in velocity (m.s-1) 2. Acceleration (m.s-2) = Time taken for the change (s)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work