EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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You drop an object from rest (initial velocity = 0) from a height of 6.8 metres. What is the final speed of the object as it hits the floor? (Speed is a magnitude and so must be a positive value). Assume the magnitude of the acceleration due to gravity g = 9.8 m/s2. Give your answer to 2 s.f.
A student throws a ball straight up in the air, which of the following statement is true after the ball leaves her hand and while in the air?
The velocity of the ball is always in the same direction as its acceleration.
The velocity of the ball is never in the same direction as its acceleration.
The acceleration of the ball is zero.
The velocity of the ball is opposite its acceleration on the way up.
The velocity of the ball is in the same direction as its acceleration on the way up.
A ball is dropped from a height of 3 m and rebounds from the floor to a height of 2 m.a) What is the velocity of the ball just as it reaches the floor?b) What is the velocity just as it leaves the floor?c) If it is in contact with the floor for 0.02 s, what are the magnitude and direction of its average acceleration during the interval?
Chapter 2 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 2.1 - An ant starts at x = 20cm on a piece of graph...Ch. 2.3 - What is your speed at the instant you turn around...Ch. 2.4 - A powerful car is advertised to go from zero to 60...Ch. 2.4 - A car moves along the x axis. What is the sign of...Ch. 2.4 - The position of a particle is given by the...Ch. 2.5 - Prob. 1FECh. 2.7 - Prob. 1GECh. 2.7 - Prob. 1HECh. 2 - Does a car speedmeter measure speed, velocity, or...Ch. 2 - Can an object have a varying speed if its velocity...
Ch. 2 - When an object moves with constant velocity, does...Ch. 2 - If one object has a greater speed than a second...Ch. 2 - Compare the acceleration of a motorcycle that...Ch. 2 - Can an object have a northward velocity and a...Ch. 2 - Can the velocity of an object be negative when its...Ch. 2 - Give an example where both the velocity and...Ch. 2 - Two cars emerge side by side from a tunnel. Car A...Ch. 2 - Can an object be increasing in speed as its...Ch. 2 - A baseball player hits a ball straight up into the...Ch. 2 - As a freely falling object speeds up, what is...Ch. 2 - You travel from point A to point B in a car moving...Ch. 2 - Can an object have zr velocity and nonzero...Ch. 2 - Can an object have zero acceleration and nonzero...Ch. 2 - Which of these motions is not at constant...Ch. 2 - Prob. 17QCh. 2 - Describe in words the motion plotted in Fig. 236...Ch. 2 - Describe in words the motion of the object graphed...Ch. 2 - Prob. 1MCQCh. 2 - Prob. 2MCQCh. 2 - Prob. 4MCQCh. 2 - Prob. 5MCQCh. 2 - Prob. 6MCQCh. 2 - Prob. 7MCQCh. 2 - Prob. 9MCQCh. 2 - Prob. 11MCQCh. 2 - (I) If you are driving 110 km/h along a straight...Ch. 2 - What must your cars average speed be in order to...Ch. 2 - (I) A particle at t1 = 2.0 s is at x1 = 4.3 cm and...Ch. 2 - (II) According to a rule-of-thumb, every five...Ch. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10PCh. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 24PCh. 2 - (II) A car moving in a straight line starts at x =...Ch. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - (II) The position of a racing car, which starts...Ch. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - Prob. 36PCh. 2 - Prob. 37PCh. 2 - Prob. 38PCh. 2 - Prob. 39PCh. 2 - Prob. 40PCh. 2 - (II) A car traveling 85 km/h slows down at a...Ch. 2 - Prob. 42PCh. 2 - Prob. 43PCh. 2 - Prob. 45PCh. 2 - Prob. 46PCh. 2 - Prob. 47PCh. 2 - Prob. 48PCh. 2 - Prob. 49PCh. 2 - Prob. 50PCh. 2 - Prob. 52PCh. 2 - Prob. 53PCh. 2 - Prob. 54PCh. 2 - Prob. 55PCh. 2 - Prob. 56PCh. 2 - Prob. 57PCh. 2 - (II) The best rebounders in basketball have a...Ch. 2 - Prob. 59PCh. 2 - Prob. 60PCh. 2 - Prob. 61PCh. 2 - Prob. 62PCh. 2 - Prob. 63PCh. 2 - Prob. 64PCh. 2 - Prob. 65PCh. 2 - Prob. 66PCh. 2 - Prob. 67PCh. 2 - Prob. 69PCh. 2 - (III) A toy rocket moving vertically upward passes...Ch. 2 - Prob. 71PCh. 2 - Prob. 72PCh. 2 - Prob. 73PCh. 2 - (III) Air resistance acting on a falling body can...Ch. 2 - Prob. 75GPCh. 2 - A person jumps from a fourth-story window 15.0 m...Ch. 2 - Prob. 77GPCh. 2 - Prob. 78GPCh. 2 - Prob. 79GPCh. 2 - Prob. 80GPCh. 2 - Consider the street pattern shown in Fig. 247....Ch. 2 - Prob. 82GPCh. 2 - Prob. 83GPCh. 2 - Prob. 84GPCh. 2 - Prob. 86GPCh. 2 - Prob. 87GPCh. 2 - In putting, the force with which a golfer strikes...Ch. 2 - Prob. 89GPCh. 2 - Prob. 91GPCh. 2 - Prob. 92GPCh. 2 - Prob. 93GPCh. 2 - Prob. 94GPCh. 2 - Prob. 95GPCh. 2 - Prob. 96GPCh. 2 - Prob. 97GPCh. 2 - Prob. 98GPCh. 2 - Prob. 99GPCh. 2 - Prob. 100GPCh. 2 - Prob. 101GPCh. 2 - Prob. 102GPCh. 2 - You are traveling at a constant speed vM, and...
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- An aging coyote cannot run fast enough to catch a roadrunner. He purchases on eBay a set of jet-powered roller skates, which provide a constant horizontal acceleration of 15.0 m/s2 (Fig. P3.57). The coyote starts at rest 70.0 m from the edge of a cliff at the instant the roadrunner zips past in the direction of the cliff. (a) Determine the minimum constant speed the roadrunner must have to reach the cliff before the coyote. At the edge of the cliff, the roadrunner escapes by making a sudden turn, while the coyote continues straight ahead. The coyotes skates remain horizontal and continue to operate while he is in flight, so his acceleration while in the air is (15.0i9.80j) m/s2. (b) The cliff is 100 m above the flat floor of the desert. Determine how far from the base of the vertical cliff the coyote lands. (c) Determine the components of the coyotes impact velocity.arrow_forwardFrom the top of a cliff, a person throws a stone straight downward. The initial speed of the stone just after leaving the person's hand is 9.7 m/s. (a) What is the acceleration (magnitude and direction) of the stone while it moves downward, after leaving the person's hand? magnitude m/s2arrow_forwardAn object is moving in such a way that the velocity is changing (only direction is changing, but magnitude is same) all the time. Is it possible to get acceleration from that motion? If yes, give an example. .arrow_forward
- An object is thrown into the air with initial velocity v = 5m/s. After being released it is only subject to the acceleration due to gravity a = -9.81m/s2 slowing it down. It will, as you know, eventually stop moving upwards and then begin coming back down towards the person who threw it. At the top most point of its journey, it will be at rest for a brief instant in time. How long from when it was initially thrown until it reaches its highest point in the air? Please write it out. I can't fully follow along if the solution is typed outarrow_forwardA train makes a journey in which at a point on its trajectory a speed of 80.0 km / h is measured towards the east, while half an hour later the speed is 65.0 km /h towards the east. Can you calculate the average acceleration in this half hour of travel? a) No, because we do not know the starting position or the final position of that half hour of travel. b) No, because we do not know how the direction of the train changed in the other moments of that half hour of travel. c) Yes, and it has a magnitude of 30.0 km/h?? westward. d) Yes, and it has a magnitude of 30.0 km / h²2? to the east.arrow_forwardYou have two stones in your hands, and you are standing on a bridge. You throw the first stone with a velocity of 8.00 m/s upward. One second later, you let drop the second stone. Both stones hit the water below the bridge at the same time. a)For how much time is the first stone in free fall? b)What is the distance from your hand to the water? c) What is the velocity (magnitude and direction) of the first stone when it hits the water?arrow_forward
- A baseball is thrown vertically upwards into the air (neglect air resistance) and returns to the starting point. True The initial velocity and final velocity are equal False The average acceleration is zero. False The average speed is zero. True The average velocity is zero. False True The initial speed and final speed are equal. The total displacement is zero.arrow_forwardDoes acceleration depend on the speed of an object? Why or why not? Give an example of a slow object having a larger acceleration than a fast object. Can anyone think of an example of an object moving in such a way so that it is accelerating while having zero velocity?arrow_forwardA student stays at her initial position for a bit of time, then walks slowly in a straight line for a while, then stops to rest a while, and finally runs quickly back to her initial position along a straight line. Which of the following statements is true about the average speed and the magnitude of the average velocity of the student during her trip? Her average speed is the same as the magnitude of her average velocity. Her average speed is less than the magnitude of her average velocity. The student's average speed and velocity cannot be compared without knowing the farthest point she reached. Her average speed is greater than the magnitude of her average velocity.arrow_forward
- The basketball bounces straight back up off the ground and reaches a maximum height of 4.00m. a)With what speed did the ball leave the ground? (It is perfectly natural for this to be less than the speed it had before it hit the ground.) The basketball hoop is 3.05 m above the ground. The ball will pass the position of the hoop twice –once on the way up and a second time on the way down. b)Determine the ball's velocity (magnitude and direction) as it reaches the height of the hoop on its way down.arrow_forwardFrom the top of a cliff, a person throws a stone straight downward. The initial speed of the stone just after leaving the person's hand is 8.1 m/s After 0.46 s, how far beneath the top of the cliff is the stone? (Give just the distance fallen, that is, a magnitude.) marrow_forwardA hot air balloon rises from the ground with a constant acceleration of 2.6 m/s?. Six seconds later, a ball is thrown vertically upward. What must be the initial speed of the ball for it to touch the hot air balloon? It should be noted that at point of contact, their velocity is equal.arrow_forward
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