College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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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.arrow_forwardWhen 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.arrow_forwardcomplete 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?arrow_forward
- Force Exerted on an Object vs. Time 8 3 Time (s) Which of the following statements about the graph is correct? Your answer: O The area between the line and the x-axis could be the object's change in momentum (or impulse). O The area between the line and the x-axis could be the power exerted on the object. O The slope of the line could be the object's change in momentum (or impulse). O The slope of the line could be the power exerted on the object. O Neither of these values could be found from the graph. Force (N) 00arrow_forwardcomplete 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?arrow_forwardPart A A tennis ball of mass m = 0.060 kg and speed v = 29 m/s strikes a wall at a 45° angle and rebounds with the same speed at 45°. (Figure 1) What is the magnitude of the impulse given to the ball? Express your answer to two significant figures and include the appropriate units. µA а xa Xb X•10" FAt = 1.82808 kg S Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part B What is the direction of the impulse given to the ball? Figure 1 of 1 upward downward to the left to the right 450 Submit Previous Answers 450 Correct 圓arrow_forward
- A large raindrop--the type that lands with a definite splat--has a mass of 0.014 g and hits your roof at a speed of 8.1 m/s. Part A What is the magnitude of the impulse delivered to your roof? Express your answer with the appropriate units. J = Part B Fav = μA Value .0 If the raindrop comes to rest in 0.37 ms, what is the magnitude of the average force of the impact? Express your answer with the appropriate units. μA Units Value 2 ? Units ?arrow_forwardA boy jumps straight up with an initial speed of 5.00 m/s. The boy’s mass is 60.0 kg, and the mass of the earth is about 6.00 x 1024kg. a. What is the initial recoil speed of the earth? b. How much time does it take for the two to reach their maximum separation? i.e., how long until the boy starts down? c. How far did the boy move in this time? d. How far did the earth move in this time?arrow_forwardA time-varying horizontal force of F(t) = ßt3 acts on an object for 1.46 seconds, starting from t = 0 s. A Calculate the magnitude of the impulse on the object from the applied force if B = 9.19 N/s³. J = O Search @ kg m/s 7:58 PM 11/29/2022arrow_forward
- 5arrow_forwardA rutber bell and a clay ball have oqual mass and are dropped onto a digital scale. The rubber ball bounces back to nearly the same height. The clay bell sticks to the scale when it hits. For the (single) imeraction with the scale. a. Whar is the ratio af the change of the clay ball's momentum to the change of the rubber ball's momentum? b. What is the ratio of the impulse impaned to the clay ball to the impulse imparted so the rubber ball? Iruter c. Which of the following graphs could epresent, o the same scale, the force exerned by the scale on each ball as a function of time? Select an answer for the rubber ball and an ansaer for the clay ball. F(N) F(N) F(N) I (s) I (s) 1 (s) F(N) F(N) clay ball: rubber ball: B) 1 (s) D) I (s)arrow_forward
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