Experiments are essential in the study of the physics course in the planet. They involve critical observation of day to day phenomenon under controlled conditions. The results of some the simple physics experiments are based on strong fundamentals thus they are not intuitive (W.T Griffith 8) .This paper elaborates on the experimental results used in determining the acceleration of a particular ball thrown up when its instantaneous vertical velocity is zero and the time taken by a pair of balls with different initial horizontal velocities to land on the ground when they are thrown off from the same plane surface. Are these results really non-intuitive? Various perspectives discussed later in this paper will try to shade light on the answer to this question. Physics experiments results should be non-intuitive since they try to prove the theoretical ideas.
Throwing A Ball Upwards
It is a common day to day phenomenon that objects thrown upwards normally fall back to the ground. What “miracle “happens? Why don’t they just move upwards to infinity height? However, analysis of the results in this experiment elaborate how the ball velocity changes and how high the ball can go hence explaining the non-intuitivity of the results (Conrad, 2015). In this experiment close attention should be considered when dealing with the direction of acceleration and velocity vectors.
To begin with, the change in velocity can be determined precisely in this experiment. Let assume the ball was tossed up at an initial velocity of 20 m/s. Gravity is the main force acting on this ball producing a downward acceleration of around 9.8 m/s which we will round off to 10m/s for convenient calculation purposes. The gravity acceleration is in opposite direction to the initial of the ball therefore the velocity of the ball reduces by 10 m/s for every second. Therefore the instantaneous velocity of the ball is easily determined, for instance our ball here will have a velocity of 10 m/s within one second. The height the ball can reach can be determined by determining the time its velocity becomes zero.
Falling Objects And Projectile Motion
In this experiment two identical balls with different original horizontal velocities are thrown off the identical plane surface. The issue which ball will hit the ground first rises here. Since the results in this experiment can be used to show how much time each ball takes to hit the ground and how far the ball falls in different time intervals, it proves that this experiment has sold ground principles of operation (Peter and Sally, 2016). It is observed that the ball wit ball with a higher initial velocity takes less time to hit the ground and it also travels longer distances in a given period of time. The velocity of the balls increases with time due to gravity acceleration.
In conclusion, the analysis of results from these two experiments proves that apparently non-intuitive outcomes. The effect of air resistance has been neglected in this analysis since it very small to cause any significant effect in the experiment (W.T Griffith 8). However, the effect can be observed clearly when objects of small weight and large surface area, such as a piece of paper, are used. The velocity and distance can be obtained using the following formulae
V=V0 + at
Distance = V0 + 1/2at2.
Physics of Everyday Phenomena: A Conceptual Introduction to Physics T. Griffith 8
Landau, D. P., & Binder, K. (2014). A guide to Monte Carlo simulations in statistical physics. Cambridge university press.
Conrad, J. (2015). Statistical issues in astrophysical searches for particle dark matter. Astroparticle Physics, 62, 165-177.
Agrawal, P., Nair, A. V., Abbeel, P., Malik, J., & Levine, S. (2016). Learning to poke by poking: Experiential learning of intuitive physics. In Advances in Neural Information Processing Systems (pp. 5074-5082).