8) A baseball of mass m arrives at a batter with speed vo. The batter swings, and hits the ball. The instantafter the ball leaves the bat it has speed 2vo. Approximately how much work did the bat do to the ball?A) 3mv?B) 2mv?C) zmv?D)mv?E) ½ mvXF) zmv?G) More information is needed

The workdone by the bat is nothing but the change in the kinetic energy of the ball. So, all we have…

Answered: 8) A baseball of mass m arrives at a…

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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A particle of mass m has a velocity of v = (v₂i + vj + v₂k). What is the correct expression for its kinetic energy? O a. O b. O c. O d. O e. m(v2i+vy²j + v₂²k)/2 None of these choices. m(vx2 + Vy² + V₂²)/2 m/2(2vx + 2Vy + 2V₂) m/2(2v,i + 2vj + 2v₂k)
You shoot a bullet aiming to a far away tree. The bullet is 15.0 g and it embedded 15.0 cm into the trunk of a tree. If the speed of the bullet just before entering the tree is 120.0 m/s, a) How much work is done by the average force?b) what is the average force exerted on the bullet by the tree?c) What is the average acceleration of the bullet in the tree?
PRINTER VERSION 1 BACK NEX Z Your answer is partially correct. Try again. In the figure, a frictionless roller coaster car of mass m = 832 kg tops the first hill with speed vo = 19.0 m/s at height h = 44.0 m. What is the speed of the car at (a) point A, (b) point B, and (c) point C? (d) How high will the car go on the last hill, which is too high for it to cross? Use g=9.81 m/s2. First hill- B h/2 C (a) Number19 UnitsTm/s (b) Number28.15 UnitšT m/s (c) Number 35 Units m/s (d) Number" Units Click if you would like to Show Work for this question: gen/shared/assignment/test/aglist.uni?id3. Open Show Work earch 9:18 PM ENG 4/4/2021 13 ) is 16 17 .ロ/京 19home & 4 6. 7. 8. 9. 近
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Find the work done in joules by gravity as an object of the mass m 5 kg is raised up at constant speed from a height h;=26 m to a height h2=69 m. Consider g = 10 m/s2 A. None B. -2150 D. -6450 E. -4300 O < O a OUO DOE
A bullet penetrates an object and its velocity is reduced by a half. What is the ratio between the initial kinetic energy of the bullet and kinetic energy when it leaves the object? KE, 1 O KE 2 KE; KE KE, = 1 O KEF KE, 1 • KE 4 %3! KE, = 4 KE a. you hold your bag as you walked along level ground: Yes v b. a briefcase is carried up stairs at constant speed: Yes C. a weightlifter lifts a 20Kg weight through a height of 1.2m: Yes d. a spring is stretched by Scm: Yes v
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3.) A public bus (with mass 2500 kg) is traveling along H1 highway at a speed of 3 m/s. Suddenly the bus- driver jams on the brakes and the bus comes to a complete stop. a) How much kinetic energy does the bus have initially? b) How much kinetic energy does the bus have when it comes to a complete stop? c) If the brakes exert a force of 1000 N, how much braking distance does the car need to come to a complete stop? d) If the car was traveling at double the speed (6 m/s), how much braking distance would be required?
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8) A baseball of mass m arrives at a batter with speed v. The batter swings, and hits the ball. The instant after the ball leaves the bat it has speed 2vo. Approximately how much work did the bat do to the ball? A) 3mv B) 2mv? C) zmv? D) mv? E) ½ mv? XF) zmv? G) More information is needed