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

Simulating Asteroid Impact

Extracts from this document...

Introduction

Mechanics Coursework Simulating Asteroid Impact In this experiment the ball bearings will be the free falling objects which will simulate a meteorite or asteroid impact. Any object which is allowed to free fall in the Earth's gravitational field will experience an acceleration (g) equal to 9.8 m/s2. In order to determine the velocity of the ball bearing at the moment of impact, two equations are needed. The equation, (1) vf = vi - gt states that the final velocity, vf, is equal to the initial velocity, vi, minus the acceleration due to gravity, g, multiplied by the amount of time, t, it takes the object to fall. During this experiment you will be unable to accurately measure the fall time. Because of this, another equation is needed to determine the final velocity. (2) d = vit - 0.5gt2 Equation (2) allows you to calculate the distance, d, an object will fall within the Earth's gravitational field, if the amount of fall time is known. It should be noted that d is negative (-) for objects moving towards the Earth. In other words a falling object has a negative displacement. ...read more.

Middle

Smooth the surface of the white sand and sprinkle a light covering layer of colored sand on top. This layer of colored sand lets you see where the ball bearing pushes the white sand up to the surface as crater ejecta. This enables you to easily measure the crater diameter and to see the changes in crater morphology that result when using heavier ball bearings dropped from larger heights. Activity 1: The size of a crater is related to the energy of the impacting object (the asteroid). This makes sense -- as the energy of the asteroid increases, it releases more energy on impact, making a bigger crater. The relationship is not linear however, but rather some form of power law: D = k * En where E is the energy of the asteroid (kinetic and potential) and D is the diameter of the crater. Also, k is an unknown constant, and n is some unknown factor that describes how the diameter of the crater depends on the energy of the asteroid. We want to find out what n and k might be by looking at our scaled version of asteroids and craters. ...read more.

Conclusion

So we know n from the slope on the graph. We also need to know the constant k in the equation relating crater diameter and impact energy. To find k, you will use one of your data points. Pick a data point that is close to your best-fit line (one that you think is a good value), and plug D, E, and your value for n into the equation D = k En. Now you can solve that equation for the value of k. For example, suppose you dropped a 0.03kg ball bearing from a height of 2m. This give you an impact energy of E = mgh = (0.03kg) * (9.81m/s^2) * (2m) = 0.59Joules. And suppose that when you dropped the ball bearing, you measured the crater diameter to be 5cm = 0.05m, and also your graph had given you a slope = n = .25. Then, D = 0.05m, E = 0.59Joules, and n = 0.25, plugged into the equation D = k En k = D / (En) = 0.05 / (0.59^0.25) = 0.057 . Now, go and put all this knowledge to work in the Activity #1 Questions! ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Fields & Forces 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 AS and A Level Fields & Forces essays

  1. Peer reviewed

    Determination of the acceleration due to gravity (g)

    4 star(s)

    measurement of time than to reduce the fractional error in the measurement of height because the error in the measurement of time was doubled as square of time. The error of measuring time could be the time delay of the receptor pad to the electronic timer, although the time recorded

  2. Investigation to determine the viscosity of glycerol.

    Using this feature it is possible to calculate the viscosity of an object at a particular temperature using Stokes Law. 1.3 Equipment The following equipments will be needed to conduct the experiment. * Measuring Cylinder - will be filled with glycerol.

  1. Investigating a factor affecting the voltage output of a transformer.

    V=IR When there is a constant voltage; k=IR * k/R=I * Increasing resistance decreases current (they are inversely proportional) A high resistance leads to a low current, so the electrons can't move passed a given point in the circuit as quickly.

  2. The experiment involves the determination, of the effective mass of a spring (ms) and ...

    % unc in xT2 To find the value of ?T2/S2 the following formula was used, ?T2/S2 = T2/S2 ? % unc in xT2 100 Conclusion The graphs show that the formula, T2= 4?2m+4?2ms does indeed give a straight-line graph of form Y = mx + c.

  1. Maglev Trains And The Technology Behind Them (magnetism)

    In normal Maglev systems Lw is kept constant while the frequency of the current is changed. A third system of maglev has been thought up where it is the length of the windings that are changed while the frequency is kept constant.

  2. Modeling a basketball shoot in the lab

    (This is for further use in the experiment). In both "big" & "small" force experiments, the recorded speed is halved compare with the experimental value. Since, only of elastic potential energy is change to kinetic energy of the table tennis ball.

  1. Measuring The Constant g; The Acceleration Due To Gravity

    of the string and shall act as a mass to be swung by the overall pendulum which is created. This is convenient since it will stick to the string firmly without the need for an adhesive, and there will be almost no risk of it falling off the string.

  2. Objective To find the acceleration due to gravity by means of a simple ...

    Result table: Time for 20 oscillations s 44.83 42.56 40.65 38.66 36.44 Period2 T2/s2 5.024 4.528 4.131 3.736 3.320 Length of string m 1.224 1.10 1 0.9 0.8 Effective length L/m 1.251 1.127 1.027 0.927 0.827 Result graph showing the relation between the period and effective length can be used

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