Physics - Assignment Example

Question Answer to the Question Interpretation of the Mistake Source of the Information Avoidance of Future Mistakes 3 When a boxer hits a punching bag, the strength of his punch depends on how much force the bag can exert on the boxer’s feet. The instance here is not true since it is the bag that acts as resistance to the force that the boxer impacts on the bag. Impacts of Forces Bodies (Munjiza, Esteban, and Earl,74) Learn more on the impacts of forces on bodies and their applications so as to acquire the concepts in handling such problems. 4 A fasts moving missile soaring overhead possesses force A body in motion requires both speed and force. Force alone is not enough Newton’s Laws of Motion (Burnett, 62). Learn more on the Newton’s laws of motion and put them in practice especially the calculations 13 Neglecting air resistance, a ball projected straight upward so it remains in the air for 10 seconds needs an initial speed of 50 meters per second Wrong computations of the values. Using the equation; v=u+at, where v= final velocity, u=initial speed which is 0, a=acceleration which is 9.81m/s2, t is the time taken which is 10seconds, then the solution to the equation would lead to a value of (0+9.81*10)= 98.1, that in this case is close to 100m/s which is the correct value here. Newton’s Laws of Motion (Burnett, 66). Learn more on the Newton’s laws of motion and put them in practice especially the calculations that relates to them 18 If your automobile runs out of fuel while driving, the engine stops. You dont come to an abrupt stop due to principle of continuation The instance here is the laws of inertia either acts on a body in motion or a body at rest. For this case, the mistake here was failure to have the knowledge of the two laws of inertia in giving the replies. Newton’s Laws of Motion (Burnett, 72). Read more on the laws of inertia and their applications in daily lives 24 The mass of a pet turtle that weighs 10N is about 100kg. A body that has a weight 10N has a close mass of one kilogram given the gravitational constant is always 9.81m/s2. Consequently, by dividing the weight of the pet turtle with the gravitational constant, then the value found is approximately one kilogram; that in this case is the mass of the turtle. Newton’s Laws of Motion (Burnett, 78). Learn more on the Newton’s laws of motion and put them in practice especially the calculations that relates to them 25 If an objects mass is decreasing while a constant force is applied to the object, the Acceleration increases Force acting on a given object is directly proportional to its mass. Similarly, the constant of proportionality in this case, is the acceleration. In an instance that may see, the increase in the force acting on the object, while decreasing its mass, will in this case lead to increase in its acceleration. Newton’s Laws of Motion (Burnett, 86). Learn more on the Newton’s laws of motion and put them in practice especially the calculations that relates to them 26 A theory in the field of science is a synthesis of a large body of well-tested knowledge Every idea in the field of science has some principles that lead to the explanation of its originality. For this reason, that is why there are always other options of verifying the validity of the facts so that it fit within the demands of the present. Such tests on the facts also make it possible for correction of errors that theory came with from its original inventors The scholars who contributed towards the development of the idea that formulates the theory for its explanation Learn from the scholars who contributed towards the development of the idea that formulates the theory for its explanation 27 Facts in the field of science are absolute The instance is not true since there are always other options of verifying the validity of the facts so that it fit within the demands of the present. The scholars who contributed towards the development of the idea that formulates the theory for its explanation Learn from the scholars who contributed towards the development of the idea that formulates the theory for its explanation 28 For a scientific hypothesis to be valid there must be a test for proving it right The tests on the facts o make it possible for correction of errors that the hypothesis came with from its original inventors. For this reason, the tests must first prove it wrong. The scholars who contributed towards the development of the idea that formulates the theory for its explanation Learn from the scholars who contributed towards the development of the idea that formulates the 33 Compared with falling on a stone floor, a wine glass may not break when it falls on a c1iarped floor because the stopping time is longer on the carpet The instance is true since it supports the evidence of the action and reaction forces that always equal and opposite. Newton’s Laws of Motion (Burnett, 92). Learn more on the Newton’s laws of motion and put them in practice especially the calculations that relates to them 34 A falling l-N apple hits the ground with a force of;(need more information) In this case, there was no idea on the answer to choose. However, the best answer was that 10N Newton’s Laws of Motion (Burnett, 98). Learn more on the Newton’s laws of motion and put them in practice especially the calculations that relates to them 35 A karate chop is more effective if ones hand bounces upon impact. The suitable answer here was through the time extension of the karate chop on the hand. As e result, it would create more time for the Knife to act on the body. Effect of Pressure on Bodies (Munjiza, Esteban, and Earl,85) Learn more on the effect of pressure on bodies so as to acquire more knowledge of the effect of sharp objects on bodies such as the karate chop 37 4,000.0 m has 2 significant figures The mistake here is failure to have the knowledge of expressing very huge numbers into standard figures. For this case, expression of 4,000 in standard form would be 4.0*103 which is the correct answer for justifying the figure to have three significant figures. Scientific Expression of Numbers in Standard Forms (Pavese, 67) Practice more on the Scientific Expression of Numbers in Standard Forms Works Cited Burnett, Betty. The Laws Of Motion. New York: Rosen Pub. Group, 2005. Print. Munjiza, Antonio A, Esteban Rougier, and Earl E Knight. Computational Mechanics Of Discontinua. Chichester, West Sussex, U.K.: Wiley, 2011. Print. Pavese, Franco. Advanced Mathematical & Computational Tools In Metrology & Testing VIII. Singapore: World Scientific, 2009. Print. Read More