1. a) If there is an external force acting on a system, can you please tell whether the momentumwould be changed? If the momentum is changed, can you link the change in momentum to anotherphysical quantity?1b) Define Impulse. Mention two units of Impulse. Is it a vector or scaler? If it is a vector, whatwould be the direction of impulse?1c) A golf ball with a mass 46.0 g strikes a wall with an initial speed of 140 km/h along –x-direction and bounces back at the speed of 145 km/h flying in xy plane, which makes 30° with thehorizontal. Calculate the impulse vector in terms of magnitude and direction. If the duration of thecollision is 0.900 ms, determine the magnitude of the average force acting on the ball during thecollision.2+1

1. a) If there is an external force acting on a system, can you please tell whether the momentum would be changed? If the momentum is changed, can you link the change in momentum to another physical quantity? 1 b) Define Impulse. Mention two units of Impulse. Is it a vector or scaler? If it is a vector, what vould be the direction of impulse? 1

1. a) If there is an external force acting on a system, can you please tell whether the momentum would be changed? If the momentum is changed, can you link the change in momentum to another physical quantity? 1 b) Define Impulse. Mention two units of Impulse. Is it a vector or scaler? If it is a vector, what vould be the direction of impulse? 1

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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When there is motion is both directions, state which direction is positive at the START of the problem. For the impulse-momentum and the conservation of momentum problems: Plug your GIVEN VALUES into the equation FIRST then do the algebra. Use the following equations: F t = m vf -m vi m1 vi1 + m2 vi2 = m1 vf1 + m2 vf2 m1 vi1 + m2 vi2 = (m1 + m2) vf (m1 + m2) Vi = m1 vf1 + m2 vf2 6.) Ball 1 : m1 = 8 slugs and vi1 = 3 ft/s to the RIGHT Ball 2: m2 = 4 slugs and vi2 = 0 Ball 3: m3 = 6 slugs and vi3 = 0 picture the three balls all siting on a flat surface with some space between them. AFTER ball 1 strikes ball 2, ball 1 is traveling at 1.5 ft/s to the LEFT AFTER ball 2 strikes ball 3, ball 2 is traveling at 3 ft/s to the LEFT a,) What is the direction (left or right) and final velocity of ball 3? Vf3 =? Show all unit conversions step by step, if any.
E6.) A ball experiences a change in momentum of 24 kg-m/s.a. What is the impulse acting on the ball?b. If the time of interaction is 0.15 s, what is the magnitude of the average force acting on the ball? Answer with the correct formula.
When there is motion is both directions, state which direction is positive at the START of the problem. For the impulse-momentum and the conservation of momentum problems: Plug your GIVEN VALUES into the equation FIRST then do the algebra. Use the following equations: F t = m vf -m vi m1 vi1 + m2 vi2 = m1 vf1 + m2 vf2 m1 vi1 + m2 vi2 = (m1 + m2) vf (m1 + m2) Vi = m1 vf1 + m2 vf2 2. ) The baseball is traveling at 90 mph to the left towards the batter. The batter strikes the 0.05 slug baseball with a force of 50.00 lbs. The bat is in contact with the softball for 0.25 seconds. Assume that the baseball is traveling directly in the opposite direction after being hit with the bat. a. what is the velocity of the baseball after being hit by the batter? show all unit conversions-if any, step by step.
In the middle of a race, three runners have the following speeds and masses. A. 54 kg, 4.6 m/s B. 65 kg, 4.1 m/s C. 85 kg, 2.6 m/s Order the runners from largest linear momentum to smallest linear momentum. (Use only ' or "-" symbols. Do not include any parentheses around the letters or symbols.)
complete the following 3 steps. 1. Indicate what your chosen system is (which objects are included in the system?) as well as your initial and final instants. Explain how your choice will help you solve the problem. 2. Draw a momentum-impulse bar chart for your chosen system that is consistent with the information given. 3. Write an equation using the bar chart as a guide and solve for any unknowns. A 6-kg bowling ball moving at 3 m/s hits a single 2-kg pin, knocking it forward at 6 m/s. If the collision took 0.050 s, what average force was exerted on the pin?
complete the following 3 steps. 1. Indicate what your chosen system is (which objects are included in the system?) as well as your initial and final instants. Explain how your choice will help you solve the problem. 2. Draw a momentum-impulse bar chart for your chosen system that is consistent with the information given. 3. Write an equation using the bar chart as a guide and solve for any unknowns. A .06 kg tennis ball hits a wall with a velocity of 30 m/s and rebounds at about the same speed. What is the change in momentum of the ball from before the collision to after?
Use the impulse-momentum equation to answer questions: 1) Why is it important to “follow through" when trying to hit a home run? 2) Why does it hurt more when you fall on a concrete floor than on a wooden floor? 3) What is the momentum of a golf ball with a mass of 62 g moving at 73 m/s? 4) If in the problem above, the impact between the ball and club lasted for a. 2.0 x 103 s, what force acted on the ball? What force acted on the club? 5) For how long a time must a tow truck pull with a force of 550 N on a stalled 1200 kg car to give it a forward velocity of 2.0 m/s?
A force platform sensor used to measure the force of impact a 65.0 kg person makes with it after jumping down from a height of 0.600 m. During the contact time of 0 to 0.800 s, the platform records an average force on it of -1226.67 N. What impulse did the person receive from the platform? What was the velocity of the person right before they hit the platform? Neglect air resistance. What was the velocity of the person right after they left the platform? What was the average net force acting on the person? Using your answer from (d), determine the average contact force acting on the person.
I. Conceptual Physics. Justify your answer. 1. A 10-gram rubber ball and a 10-gram clay ball are thrown at a wall with equal initial speeds. The rubber ball bounces, the clay ball sticks. Which ball exerts a larger impulse on the wall? Justify your answer.
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I. A lump of clay (m = 3.01 kg) is thrown towards a wall at speed v = 3.15 m/s. The lump sticks to the wall. (a) What kind of collision is it? Is momentum conserved during this collision? Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic energy lost during this collision. II. Same lump is thrown towards the same wall, but this time it bounces off the wall at speed of 3.15 m/s. (a) What kind of collision is it? Is momentum conserved during this collision? Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic energy lost during this collision. III. Same lump is thrown towards the same wall, but this time it bounces off the wall at speed of 2.24 m/s. (a) What kind of collision is it? Is momentum conserved during this collision? Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic…
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