impulse on a baseball mastering physics
At what approximate location on the diagram (in terms of dots) does each car begin to experience the impulse? Knowing two of these three quantities allows us to compute the third quantity.

In a collision, objects experience an impulse; the impulse causes and is equal to the change in momentum. In the halfback-defensive back collision, the halfback experiences a force that lasts for a certain amount of time to change his momentum.

-40 kg*m/s, See Answer A 0.50-kg cart (#1) is pulled with a 1.0-N force for 1 second; another 0.50 kg cart (#2) is pulled with a 2.0 N-force for 0.50 seconds. Now consider a collision of a tennis ball with a wall. b. The velocity change is -9 m/s in case A and only -5 m/s in case B. Which cart (#1 or #2) has the greatest acceleration? Explain. Note that not all the numbers are necessary for computing the impulse; don't "force" the value of mass into the computation. In case B, the object rebounds in the opposite direction with a greater speed than in case A. Explain. c. The momentum change is greatest in case B.

The impulse is the same for each car. Impulse is equal to momentum change. d. The impulse is greatest in case A. Use the impulse-momentum change principle to fill in the blanks in the following rows of the table. a. Newton's second law (Fnet = m • a) stated that the acceleration of an object is directly proportional to the net force acting upon the object and inversely proportional to the mass of the object. The impulse is greatest for Car A. The acceleration is greatest in case A.

If a 5-kg object experiences a 10-N force for a duration of 0.10-second, then what is the momentum change of the object?

The equation really says that the.


The velocity change is greatest in case B.

These concepts are merely an outgrowth of Newton's second law as discussed in an earlier unit.

Consider a football halfback running down the football field and encountering a collision with a defensive back. The term momentum is a physics concept. In physics, the quantity Force • time is known as impulse. The impulse equals the momentum change.

Which balloon (A or B) has the greatest momentum change? -400 N, See Answer

The impulse is the same for each car. The diagrams below depict the changes in velocity of the same ball.   Impulse equals momentum change and the momentum change is greatest in case B (as stated above).

See Answer The impulse equals the momentum change.

In football, the defensive players apply a force for a given amount of time to stop the momentum of the offensive player who has the ball. (They start with the same velocity and each finish with zero velocity.) The equation really says that the. For a constant net force, the impulse is given by . There are also a few observations that can be made that relate to the qualitative nature of the impulse-momentum change theorem.

But since velocity change is not known another strategy must be used to find the momentum change. If the momentum change is greatest for Car A, then so must be the impulse.

0.010 s, See Answer

5. On occasions in a rebound collision, an object will maintain the same or nearly the same speed as it had before the collision. The momentum change is the same for each car.

Balloon B has the greatest momentum change. Since impulse = momentum change, the answer is 1.0 N*s. Momentum and Its Conservation - Lesson 1 - The Impulse-Momentum Change Theorem. Car A has the greatest acceleration. If a force acts in the same direction as the object's motion, then the force speeds the object up. Cart #2 has the greatest acceleration. Thus, the momentum change is the same for each car.

The impulse experienced by an object is the force•time. In a physics demonstration, two identical balloons (A and B) are propelled across the room on horizontal guide wires. Which car (A or B) experiences the greatest impulse? a. And finally, observe that knowing any two of the last three columns allows us to compute the remaining column.

Momentum change equals the impulse; if each cart has the same impulse, then it would follow that they have the same momentum change. Assume that a pitcher throws a baseball so that it travels in a straight line parallel to the ground.

Which car (A or B) experiences the greatest acceleration? Impulse = … Explain. The acceleration is greatest in case B. In a collision, the impulse experienced by an object is always equal to the momentum change. The diagram to the right depicts the before- and after-collision speeds of a car that undergoes a head-on-collision with a wall. By using this website, you agree to our use of cookies. In each case the initial velocity is the same. An examination of rows 1 and 2 show that force and time are inversely proportional; for the same mass and velocity change, a tenfold increase in the time of impact corresponds to a tenfold decrease in the force of impact.

Yet car A accomplishes this change in less time. As the force acts upon the object for a given amount of time, the object's velocity is changed; and hence, the object's momentum is changed. Explain. Put another way, an unbalanced force always accelerates an object - either speeding it up or slowing it down. The bigger impulse for Car A is attributed to the greater force upon Car A.

In general, elastic collisions are characterized by a large velocity change, a large momentum change, a large impulse, and a large force. Balloon B has the greatest acceleration.

The impulse on the ball caused by the bat will be in the negative x direction. When combined with the definition of acceleration (a = change in velocity / time), the following equalities result.   In words, it could be said that the force times the time equals the mass times the change in velocity. If the motion was represented by a ticker tape diagram, it might appear as follows: At approximately the tenth dot on the diagram, the collision occurs and lasts for a certain amount of time; in terms of dots, the collision lasts for a time equivalent to approximately nine dots. For each representation (vector diagram, velocity-time graph, and ticker tape pattern), indicate which case (A or B) has the greatest change in velocity, greatest acceleration, greatest momentum change, and greatest impulse. The strategy involves first finding the impulse (F*t = 1.0 N*s). The rate at which the velocity changes is greatest for Balloon B; this is shown by the fact that the speed (distance/time) changes most rapidly. Which balloon (A or B) experiences the greatest impulse? This equation represents one of two primary principles to be used in the analysis of collisions during this unit.

A rebound is a special type of collision involving a direction change in addition to a speed change. The velocity change is greatest in case A.  

Which balloon (A or B) has the greatest final velocity? A hockey player applies an average force of 80.0 N to a 0.25 kg hockey puck for a time of 0.10 seconds. The ticker tape patterns for each car are shown on the diagram below. 25 kg, See Answer


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