![]() Using the two defining characteristics of a hard collision as a guild, the results of this experiment, and a little common sense, state what the two basic defining characteristics of a soft collision are. In head-on-collisions air bags transform what would have been a hard collision', without the airbag present, into what is called a 'soft collision'. For each run calculate the change in momentum of the mass using the average force, then find the % difference between that and change in momentum using the change in velocity. According to the theory, the average force Favg, applied to the mass multiplied by the duration the force is applied should equal the mass's change in momentum. The calculated change in momentum Ap is negative while the impulse given by the area under the curve larea is positive. What is the % difference between the magnitude of the Ap and lacea for each of the separate runs? Does this data seem to support the theory? (10 points) 2. According to the theory the mass's change in momentum and the impulse experienced by the mass should be the same. 0.016 s 32.800 N 0.11s Favg 6.050 N Complete the chart, and show work. Delta P F (orce) T (ime) Impulse Si unit. That which is given to an object that changes in it's momentum AKA 'Change in Momentum.' Impulse equation. The harder for an object to stop, the more it has. ![]() What will be the change in momentum, (p) from the instant before the ball collides with the floor until the instant after it rebounds from the floor? (Illustrate with a vector diagram.)Į. What else is momentum and impulse known as A vector. What will the instantaneous momentum of the golf ball be immediately before it strikes the floor? d. Determine the time required for the ball to reach the floor. Construct a motion map for the golf ball from the time it is dropped until it reaches its highest point of rebound. Perfectly elastic collision with the floor.Ī. A golf ball that weighs 0.45 N is dropped from a height of 1.0 m. For how much time must the engine burn during the launch in order to reach this speed?ĥ. A rocket, weighing 4.36 x 104N, has an engine that provides an upward force of 1.2 x 105N. Modeling Instruction - AMTA 2013 2 U9 Momentum - ws 2 v3.1Ĥ. How large is the force the ball exerts on the bat? Explain. What is the final velocity of the ball? d. When the batter hits the ball, a net force of 1150 N, opposite to the direction of the ball's initial motion, acts on the ball for 9.0 x 10-3 s during the hit. If the initial speed of the baseball is v = 0.0 m/s, what will its speed be when it leaves the pitcher's hand? c. What is the magnitude of the change in momentum of the ball?ī. While being thrown, a net force of 132 N acts on a baseball (mass = 140 g) for a period of 4.5 x 10-2 sec. The following questions refer to the motion of a baseball.Ī. Which vehicle will experience the greatest acceleration Justify your answer. Which vehicle will experience the greatest change in momentum Justify your answer. Which vehicle will experience the greatest force of impact Justify your answer. Justify your answer.ī) Find the value of the ratio of kinetic energy C to kinetic energy D. A Hummer and a VW Beetle traveling at equal speeds have a head-on collision. Object C has twice the velocity of object D.Ī) Find the value of the ratio of momentum C to momentum D. Two other objects, C and D, have identical masses. Justify your answer.ī) Find the value of the ratio of kinetic energy A to kinetic energy B. Object A has 3 times the mass of object B.Ī) Find the value of the ratio of momentum A to momentum B. Two objects, A & B, have identical velocities. Impulsive Force Model Worksheet 2: Impulsive Forces and Momentumġ. Modeling Instruction - AMTA 2013 1 U9 Momentum - ws 2 v3.1
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