4) Ball A is dropped from rest from a window. At the same instant, ball B is throwndownward; and ball C is thrown upward from the same window. Which statementconcerning the balls after their release is necessarily true if air resistance is neglected?a.I At some instant after it is thrown, the acceleration of ball C is zero.b. All three balls strike the ground at the same time.C.d.All three balls have the same velocity at any instant.All three balls have the same acceleration at any instant.e. All three balls reach the ground with the same velocity.4.

The correct answer is alternative d.d. All three balls have the same acceleration at any instant.The…

Answered: 4) Ball A is dropped from rest from 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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Similar questions

A stone is thrown vertically upwards, reaches a highest point, and returns to the ground. When the stone is at the top of its path, its acceleration Select one: a. is directed downwards. b. is directed upwards. C. changes direction from upwards to downwards. d. is zero.
Which of the following descriptions corresponds to a ball tossed vertically upward? Air resistance can be neglected. a. The velocity decreases linearly from v_0 to v_f, with v_0>0 and v_f<0. b. The velocity increases linearly from zero to v_f. c. The position first increases linearly and then decreases linearly as a function of time. d. The acceleration decreases linearly from g to zero.
16,17
A rock is falling from the top of a cliff. Which of the following statements is true? a. Speed of the rock decreases and its acceleration remains constant O b. Speed of the rock increases and its acceleration remains constant Oc. Speed of the rock remains constant and its acceleration increases O d. Speed and acceleration of the rock remains constant
An object moving 30 m/s has an acceleration of -2.0 m/s^2 its velocity 1. Increases 2. Decreases A child is playing with a tennis ball. The ball thrown upward reaches its maximum height and then falls back in the child's hand. If the air resistance is negligible the acceleration of the tennis ball is 1. the same up and down but zero at the top 2. less on the way down than on the way up 3. the same at all points in the motion 4. less on the way up than on the way down
2A) starts from rest and accelerates continuously at a rate of 4.14 m/s² when the rocket is lit, what is the velocity (both magnitude and direction) of the toy car when it reaches the edge of the cliff? Suppose you place your toy car on flat ground 7.30 m away from a tall cliff. If your toy car
14. An open-topped railroad car is coasting along a horizontal track with initial velocity vo. Rain falls vertically into the car at a constant rate. Ignoring air resistance and friction at the wheels, the acceleration a of the car A) is zero. B) is non-zero, and [a] increases with time. C) is not zero, and a decreases with time. D) is non-zero, and constant in time.
7. Is it possible for an object to have zero velocity but still have an acceleration? If so, give an example. If not, explain why not.
34. A ball is thrown straight up and falls back down and is caught. Make a careful graph of velocity vs. time that shows the ball rising and falling and that illustrates the effect of air resistance. With zero air resistance (and only then), the time rising and the time falling are equal and the speed at which it is caught is equal to the speed at which it was thrown. But, when air resistance is significant, which time is greater, rising or falling? and which speed is greater, throwing or catching? Refer to your graph to help explain your answer.
15. Your car is traveling behind a jeep. Both are moving at the same speed, so the velocity of the jeep relative to you is zero. A spare tire is strapped to the back of the jeep. Suddenly the strap brcaks, and the tire falls off the jeep. Will your car hit the spare tire before the tire hits the road? Assume that air resistance is absent. (a) Yes. As long as the car doesn't slow down, it will hit the tire. (b) No. The car will not hit the tire before the tire hits the ground, no matter how close you are to the jeep. (c) If the tire falls from a great enough height, the car will hit the tire. (d) If the car is far enough behind the jeep, the car will not hit the tire. 16. The drawing shows two cars traveling in different directions with different speeds. Their velocities are: VAG = velocity of car A relative to the Ground = 27.0 m/s, due east VuG = velocity of car B relative to the Ground = 21.0 m/s, due north The passenger of car B looks out the window and sees car A. What is the…

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