• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5

# 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

# Related AS and A Level Fields & Forces essays

1. ## Investigating the forces acting on a trolley on a ramp

5 star(s)

0.49% Error induced by measuring the distances along the ramp and LEDs: 1.20% Thus, total error: 14.15% This value of the error can then be converted into an actual figure for each value of g produced; When O = 10.8�, g = 8.756 (3d.p.)

2. ## Determination of the acceleration due to gravity (g)

4 star(s)

In fact we can neglect this factor as we were doing this experiment inside, there is nearly no air resistance act on the ball. However, air must provide some resistance to the ball falling and could conceivably affect an experiment.

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

Estimate the difference between the slope of your chosen 'best' straight line through the points and the slope of other possible straight lines drawn through the points and express this in percentage. State your value for g accordingly. Ans: (The mean value obtained by the graph plotted by hand is different from that obtained from the graph done by software.

2. ## Investigating a factor affecting the voltage output of a transformer.

While the results aren't the same as my predictive calculations, I did expect there to be some discrepancy between them in view of my preliminary work. Therefore I believe that I have obtained good results as the curve I obtained is smooth and there is direct proportionality up to a

1. ## Investigation to determine the viscosity of glycerol.

Turbulent Flow "Flow in which the velocity at any point varies erratically"7 In a liquid which has turbulent flow a particle of the liquid has variable velocity and do not flow in uniform layers. This results in varying velocity at different points within the liquid due to variations in viscous forces acting on the body.

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. ## Physics Coursework, Visit to Holly House

the system makes the machine much more economical to operate, although cooling the system is still extremely expensive, but the key point is that once the electricity has been introduced into the coils then the current will continue at full strength for years without any more electrical input.

2. ## The Acceleration of a Freely Falling Body

This fact is important because only the average velocities are determined experimentally. Apparatus o freefall apparatus o two meter long meter stick o sparker o wax-coated paper strip o power supply o masking tape o switch o leads for sparker and power supply A rod fitted with a metal disk

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