Physics
7th Edition
ISBN: 9780321929013
Author: Douglas C. Giancoli
Publisher: PEARSON
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(II) Extreme-sports enthusiasts have been known to jump
off the top of El Capitan, a sheer granite cliff of height
910 m in Yosemite National Park. Assume a jumper runs
horizontally off the top of El Capitan with speed 4.0 m/s
and enjoys a free fall until she is 150 m above the valley
floor, at which time she opens her parachute (Fig. 3–37).
(a) How long is the jumper in free fall? Ignore air resis-
tance. (b) It is important to be as far away from the cliff
as possible before opening the parachute. How far from
the cliff is this jumper when she opens her chute?
4.0 m/s
910 m
150 m
FIGURE 3-37
Problem 26.
The cannon on a battleship can fire a shell a maximum distance of 32.0 km.
Calculate the initial speed of the shell in meters per second. Neglect air resistance to make the problem easier.
(10) Please don't write on a paper. I can't understand handwritten.
A stone is thrown horizontally at a speed of 6.0 m/s from the top of a cliff that is 70.0 m high. How long does it take the stone to reach the bottom of the cliff?
Chapter 3 Solutions
Physics
Ch. 3 - A small heavy box of emergency supplies is dropped...Ch. 3 - One car travels due east at 40 km/h, and a second...Ch. 3 - Can you conclude that a car is not accelerating if...Ch. 3 - Give several examples of an object's motion in...Ch. 3 - Can the displacement vector for a particle moving...Ch. 3 - During baseball practice, a player hits a very...Ch. 3 - If V =V 1+V 2 , is V necessarily greater than V1,...Ch. 3 - Two vectors have length V1=3.5km and V2=4.0km ....Ch. 3 - Can two vectors, of unequal magnitude, add up to...Ch. 3 - Can the magnitude of a vector ever (a) equal, or...
Ch. 3 - Prob. 10QCh. 3 - How could you determine the speed a slingshot...Ch. 3 - Prob. 12QCh. 3 - Prob. 13QCh. 3 - Prob. 14QCh. 3 - A projectile is launched at an upward angle of 300...Ch. 3 - Prob. 16QCh. 3 - Two cannonballs, A and B, are fired from the...Ch. 3 - 18. A person sitting in an enclosed train car,...Ch. 3 - Prob. 19QCh. 3 - Prob. 20QCh. 3 - Prob. 21QCh. 3 - Prob. 1MCQCh. 3 - Prob. 2MCQCh. 3 - Prob. 3MCQCh. 3 - Prob. 4MCQCh. 3 - A baseball player hits a ball that soars high into...Ch. 3 - Prob. 6MCQCh. 3 - Prob. 7MCQCh. 3 - Which of the three kicks in Fig. 3-32 is in the...Ch. 3 - A baseball is hit high and far. Which of the...Ch. 3 - Prob. 10MCQCh. 3 - Prob. 11MCQCh. 3 - A car travels 10 m/s east. Another car travels 10...Ch. 3 - A car is driven 225 km west and then 98 km...Ch. 3 - A delivery truck travels 21 blocks north, 16...Ch. 3 - If Vx=9.80 units and Vy=6.40 units, determine the...Ch. 3 - Graphically determine the resultant of the...Ch. 3 - V is a vector 24.8 units in magnitude and points...Ch. 3 - Vector V is 6.6 using long and points along the...Ch. 3 - Figure 3-33 shows two vectors, A and B , whose...Ch. 3 - Prob. 8PCh. 3 - Three vectors are shown in Fig. 3-35 Q. Their...Ch. 3 - (a) given the vectors A and B shown in Fig. 3-35,...Ch. 3 - Determine the vector AC , given the vectors A and...Ch. 3 - For the vectors shown in Fig. 3—35, determine (a)...Ch. 3 - Prob. 13PCh. 3 - Prob. 14PCh. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - 17. (l) A tiger leaps horizontally from a...Ch. 3 - 18. (l) A diver running 2.5 m/s dives out...Ch. 3 - Prob. 19PCh. 3 - Prob. 20PCh. 3 - 21. (Il) A ball thrown horizontally at 12.2 m/s...Ch. 3 - (Il) A football is kicked at ground level with a...Ch. 3 - Prob. 23PCh. 3 - You buy a plastic dart gun,and being a clever...Ch. 3 - Prob. 25PCh. 3 - Extreme-sports enthusiasts have been known to jump...Ch. 3 - A projectile is fired with an initial speed of...Ch. 3 - An athlete performing a long jump leaves the...Ch. 3 - A shot-putter throws the "shot" (mass = 7.3 kg)...Ch. 3 - Prob. 30PCh. 3 - A rescue plane wants to drop supplies to isolated...Ch. 3 - Suppose the rescue plane of Problem 31 releases...Ch. 3 - Prob. 33PCh. 3 - Prob. 34PCh. 3 - Suppose the kick in Example 3—6 is attempted 36.0...Ch. 3 - Revisit Example 3—7, and assume that the boy with...Ch. 3 - A stunt driver wants to make his car jump over 8...Ch. 3 - Prob. 38PCh. 3 - Huck Finn walks at a speed of 0.70 m/s across his...Ch. 3 - Determine the speed of the boat with respect to...Ch. 3 - Two planes approach each other head-on. Each has a...Ch. 3 - A passenger on a boat moving at 1.70 m/s on a...Ch. 3 - A person in the passenger basket of a hot-air...Ch. 3 - 44. (Il) An airplane is heading due south at a...Ch. 3 - In what direction should the pilot aim the plane...Ch. 3 - 46. (Il) A swimmer is capable of swimming 0.60 m/s...Ch. 3 - (a) At what upstream angle must the swimmer in...Ch. 3 - 48. (Il) A boat, whose speed in still water is...Ch. 3 - Prob. 49PCh. 3 - Prob. 50PCh. 3 - Two cars approach a street comer at right angles...Ch. 3 - Prob. 52GPCh. 3 - Prob. 53GPCh. 3 - A light plane is headed due south with a speed...Ch. 3 - Prob. 55GPCh. 3 - Prob. 56GPCh. 3 - 57. Apollo astronauts took a "nine iron" to the...Ch. 3 - 58. (a) A long jumper leaves the ground at above...Ch. 3 - Prob. 59GPCh. 3 - Prob. 60GPCh. 3 - Prob. 61GPCh. 3 - Prob. 62GPCh. 3 - Prob. 63GPCh. 3 - Prob. 64GPCh. 3 - When Babe Ruth hit a homer over the 8.0-m-high...Ch. 3 - At serve, a tennis player aims to hit the ball...Ch. 3 - Prob. 67GPCh. 3 - Prob. 68GPCh. 3 - 69. A boat can travel 2.20 m/s in still water. (a)...Ch. 3 - Prob. 70GPCh. 3 - Prob. 71GPCh. 3 - A rock is kicked horizontally at 15 m/s from a...Ch. 3 - Prob. 73GPCh. 3 - A ball is shot from the top of a building with an...Ch. 3 - If a baseball pitch leaves the pitcher's hand...
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- A ball is thrown vertically upward with a speed of 12.0 m/s.(b) How long does it take to reach its highest point?arrow_forward#4) A baseball is launched by mechanical means nearly vertically upward from a point near the edge of the roof of Morrow Library. It just misses the edge of the roof on the way down (when it is in free fall) and passes a point a distance 10.0 m below its starting point at a time 4.75 s. Air resistance may be ignored. Use the magnitude of the acceleration due to gravity as 9.80m/s² and report answers to 3 sig figs for parts A-E. Consider this as a one-dimensional problem. Show starting equations, do algebra first, and then plug numbers in last for each part.arrow_forward#4) A baseball is launched by mechanical means nearly vertically upward from a point near the edge of the roof of Morrow Library. It just misses the edge of the roof on the way down (when it is in free fall) and passes a point a distance 10.0 m below its starting point at a time 4.75 s. Air resistance may be ignored. Use the magnitude of the acceleration due to gravity as 9.80m/s² and report answers to 3 sig figs for parts A-E. Consider this as a one-dimensional problem. Show starting equations, do algebra first, and then plug numbers in last for each part. A) What is the initial velocity of the baseball? B) How high does it rise above its starting point? C) What is the magnitude of its velocity at the highest point?arrow_forward
- (c) A stone is thrown horizontally off a 25 m high building. It hits the ground a distance of 20 mfrom the foot of the building. What is the initial velocity of the stone?arrow_forwardA 0.26-kg rock is thrown vertically upward from the top ofa cliff that is 32 m high. When it hits the ground at the baseof the cliff, the rock has a speed of 29 m>s. Assuming that airresistance can be ignored, find (a) the initial speed of the rockand (b) the greatest height of the rock as measured from thebase of the cliff.arrow_forward(a) With what speed must a ball be thrown vertically from ground level to rise to a maximum height of 35 m? (b) How long will it be in the air? 24 4 5 6.arrow_forward
- A projectile is launched from ground level to the top of a cliff which is 195 m away and 135 m high (see Fig. 3–56). If the projectile lands on top of the cliff 6.6 s after it is fired, find the initial velocity of the projectile (magnitude and direction). Neglect air resistance. Landing point 135 m vo FIGURE 3–56 Problem 70. 195 marrow_forward(c) A stone is thrown horizontally off a 25 m high building. It hits the ground a distance of 20 m from the foot of the building. What is the initial velocity of the stone?arrow_forwardWhile riding on an elevator descending with a constant speedof 3.0 m>s, you accidentally drop a book from under your arm.(a) How much time does it take for the book to reach the elevatorfloor, 1.2 m below your arm? (b) What is the book’s speed relativeto you when it hits the elevator floor?arrow_forward
- Neglecting air resistance, if a ball is thrown 4.5 m/s horizontally from a 94-m cliff, how far has the ball fallen after 2.2 s?arrow_forwardWhen a balloon is at a height of 6400 ft and rising at a speed of 32ft/sec, a stone is thrown vertically out of the balloon. The stone hits the grounddirectly below in 20 sec. (a) What was the initial velocity of the stone relativeto the balloon? (b) Relative to the ground?arrow_forwardA tiger leaps horizontally out of a tree that is 3.10 m high. If she lands 4.50 m from the base of the tree, calculate her initial speed ?0 . (Neglect any effects due to air resistance.)arrow_forward
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