EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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(II) A baseball (m=145g) traveling 32m/s moves a fielder’s glove backward 25 cm when the ball is caught. What was the average force exerted by the ball on the glove?
. (I) A 7150-kg railroad car travels alone on a level frictionless track with a constant speed of 15.0 m/s. A 3350-kg load, initially at rest, is dropped onto the car. What will be the car’s new speed?
Estimate the average force that a baseball pitcher's hand exerts on a 0.145-kg baseball as he throws a 45-m/s pitch. Assume the pitcher accelerates the ball through a horizontal distance of 2.0 m, from behind his body to where the ball is
released and ignore the air resistance.
Chapter 4 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 4.4 - Suppose you watch a cup slide on the (smooth)...Ch. 4.5 - Prob. 1BECh. 4.5 - If you push on a heavy desk, does it always push...Ch. 4.5 - Return to the first Chapter-Opening Question, page...Ch. 4.7 - Prob. 1FECh. 4.7 - Prob. 1GECh. 4.7 - Prob. 1HECh. 4 - Why does a child in a wagon seem to fall backward...Ch. 4 - If an object is moving, is it possible for the net...Ch. 4 - If the acceleration of an object is zero, are no...
Ch. 4 - Only one force acts on an object. Can the object...Ch. 4 - When a golf ball is dropped to the pavement, it...Ch. 4 - If you walk along a log floating on a lake, why...Ch. 4 - (a) Why do you push down harder on the pedals of a...Ch. 4 - Prob. 9QCh. 4 - The force of gravity on a 2-kg rock is twice as...Ch. 4 - Prob. 11QCh. 4 - When an object falls freely under the influence of...Ch. 4 - Compare the effort (or force) needed to lift a...Ch. 4 - When you stand still on the ground, how large a...Ch. 4 - Whiplash sometimes results from an automobile...Ch. 4 - Mary exerts an upward force of 40N to hold a bag...Ch. 4 - A father and his young daughter are ice skating....Ch. 4 - Prob. 19QCh. 4 - Which of the following objects weighs about 1 N:...Ch. 4 - Why might your foot hurt if you kick a heavy desk...Ch. 4 - When you are running and want to slop quickly, you...Ch. 4 - Suppose that you are standing on a cardboard...Ch. 4 - Prob. 2MCQCh. 4 - Prob. 3MCQCh. 4 - Prob. 4MCQCh. 4 - Prob. 5MCQCh. 4 - Prob. 7MCQCh. 4 - Prob. 9MCQCh. 4 - Prob. 10MCQCh. 4 - Prob. 11MCQCh. 4 - Prob. 12MCQCh. 4 - Prob. 13MCQCh. 4 - Prob. 1PCh. 4 - Prob. 2PCh. 4 - Prob. 3PCh. 4 - Prob. 4PCh. 4 - Prob. 5PCh. 4 - Prob. 6PCh. 4 - (II) Superman must stop a 120-km/h train in 150 m...Ch. 4 - Prob. 8PCh. 4 - Prob. 9PCh. 4 - Prob. 10PCh. 4 - (II) A fisherman yanks a fish vertically out of...Ch. 4 - Prob. 12PCh. 4 - (II) A 20.0-kg box rests on a table. (a) What is...Ch. 4 - (II) A particular race car can cover a...Ch. 4 - Prob. 15PCh. 4 - Prob. 16PCh. 4 - Prob. 17PCh. 4 - (II) Can cars stop on a dime? Calculate the...Ch. 4 - Prob. 19PCh. 4 - (II) Using focused laser light, optical tweezers...Ch. 4 - Prob. 21PCh. 4 - Prob. 22PCh. 4 - Prob. 23PCh. 4 - (II) An exceptional standing jump would raise a...Ch. 4 - (II) High-speed elevators function under two...Ch. 4 - Prob. 26PCh. 4 - Prob. 27PCh. 4 - Prob. 28PCh. 4 - (I) Draw the free-body diagram for a basketball...Ch. 4 - (I) A 650-N force acts in a northwesterly...Ch. 4 - (I) Sketch the tree body diagram of a baseball (a)...Ch. 4 - Prob. 32PCh. 4 - Prob. 33PCh. 4 - Prob. 34PCh. 4 - (II) The cords accelerating the buckets in Problem...Ch. 4 - Prob. 36PCh. 4 - (II) A train locomotive is pulling two cars of the...Ch. 4 - Prob. 38PCh. 4 - (II) A skateboarder, with an initial speed of...Ch. 4 - (II) At the instant a race began, a 65-kg sprinter...Ch. 4 - (II) A mass m is at rest on a horizontal...Ch. 4 - Prob. 42PCh. 4 - (II) A 27-kg chandelier hangs from a ceiling on a...Ch. 4 - (II) Redo Example 413 but (a) set up the equations...Ch. 4 - (II) The block shown in Fig. 4-43 has mass m = 7.0...Ch. 4 - Prob. 46PCh. 4 - Prob. 47PCh. 4 - Prob. 48PCh. 4 - Prob. 49PCh. 4 - (II) As shown in Fig. 4-41, five balls (masses...Ch. 4 - A super high-speed 14-car Italian train has a mass...Ch. 4 - Prob. 52PCh. 4 - Prob. 53PCh. 4 - (II) A child on a sled reaches the bottom of a...Ch. 4 - Prob. 55PCh. 4 - Prob. 56PCh. 4 - (III) Determine a formula for the acceleration of...Ch. 4 - (III) Suppose the pulley in Fig. 446 is suspended...Ch. 4 - Prob. 59PCh. 4 - (II) Three blocks on a frictionless horizontal...Ch. 4 - Prob. 61PCh. 4 - (III) A small block of mass m rests on the sloping...Ch. 4 - (III) The double Atwood machine shown in Fig. 4-48...Ch. 4 - (III) Determine a formula for the magnitude of the...Ch. 4 - Prob. 65PCh. 4 - Prob. 66PCh. 4 - Prob. 67GPCh. 4 - Prob. 69GPCh. 4 - Prob. 70GPCh. 4 - Prob. 71GPCh. 4 - Prob. 72GPCh. 4 - Prob. 73GPCh. 4 - Prob. 74GPCh. 4 - Prob. 75GPCh. 4 - A block (mass mA) lying on a fixed frictionless...Ch. 4 - Prob. 77GPCh. 4 - Prob. 78GPCh. 4 - (a) What minimum force F is needed to lift the...Ch. 4 - Prob. 80GPCh. 4 - A jet aircraft is accelerating at 3.8m/s2 as it...Ch. 4 - Prob. 82GPCh. 4 - Prob. 83GPCh. 4 - A fisherman in a boat is using a 10-lb test...Ch. 4 - Prob. 85GPCh. 4 - Prob. 86GPCh. 4 - Prob. 87GPCh. 4 - Prob. 88GPCh. 4 - Prob. 90GPCh. 4 - Prob. 91GPCh. 4 - Prob. 92GPCh. 4 - Prob. 93GPCh. 4 - Prob. 94GP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A 2000-kg railway freight car coasts at 4.4 m/s underneath a grain terminal, which dumps grain directly down into the freight car. If the speed of the loaded freight car must not go below 3.0 m/s, what is the maximum mass of grain that it can accept?arrow_forwardRepeat the preceding problem for the case when the initial speed of the second object is nonzero.arrow_forward(II) A 145-g baseball is dropped from a tree 12.0 m abovethe ground. (a) With what speed would it hit the groundif air resistance could be ignored? (b) If it actually hits theground with a speed of 8.00 m/s what is the average forceof air resistance exerted on it?arrow_forward
- Estimate the average force that a baseball pitcher's hand exerts on a 0.145-kg baseball as he throws a 45-m/s pitch. Assume the pitcher accelerates the ball through a horizontal distance of 2.0 m, from behind his body to where the ball is released and ignore the air resistance. laarrow_forwardEstimate the average force exerted by a shot-putter on a 7.0-kg shot if the shot is moved through a distance of 2.8 m and is released with a speed of 13m/s.arrow_forwardProfessional Application - A 75.0-kg person is riding in a car moving at 20.0 m/s when the car runs into a bridge abutment. (a) Calculate the average force on the person if he is stopped by a padded dashboard that compresses an average of 1.00 cm. (b) Calculate the average force on the person if he is stopped by an air bag that compresses an average of 15.0 cm.arrow_forward
- a baseball catcher puts on an exhibition by catching a 0.15 kg ball, dropped from a helicopter at a height of 100m above the catcher. If the catcher "gives" with the ball for 0.75 m (was originally 1m off the ground) while catching it, what is the average force exerted on the mitt by the ball?arrow_forwarda 4.5 kg dog stands on an 18 kg flatboat at distance D=6.1 m from the shore. It walks 2.4 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find how far the dog is then from the shore. (arrow_forwardIn the figure, a runaway truck with failed brakes is moving downgrade at 109 km/h just before the driver steers the truck up a frictionless emergency escape ramp with an inclination of 0 = 17°. The truck's mass is 1.3 × 10ª kg. (a) What minimum length L must the ramp have if the truck is to stop (momentarily) along it? (Assume the truck is a particle, and justify that assumption.) Does the minimum length Lincrease, decrease, or remain the same if (b) the truck's mass is decreased and (c) its speed is decreased? (a) Number i 1.6 Units m (b) remain the same (c) decreasearrow_forward
- A 0.25-kg skeet (clay target) is fired at an angle of 28° to the horizontal with a speed of 25 m/s (Fig. 7–45). When it reaches the maximum height, h, it is hit from below by a 15-g pellet traveling vertically upward at a speed of 230 m/s. The pellet is embedded in the skeet. (a) How much higher, h', does the skeet go up? (b) How much extra distance, Ax, does the skeet travel because of the collision?arrow_forwardA 0.45-kg croquet ball is initially at rest on the grass. When theball is struck by a mallet, the average force exerted on it is 270 N.If the ball’s speed after being struck is 5.4 m>s, for what amount oftime was the mallet in contact with the ball?arrow_forwardTwo blocks of mass ma and mp, resting on a frictionless 234x 201hre connected by a stretched spring and then released (Fig. 7-48). (a) Is there a net external force on the system | before release? (b) Determine the ratio of their speeds, vA/VB . |(c) What is the ratio of their kinetic energies? (d) Describe |the motion of the CM of this system. Ignore mass of spring. mB FIGURE 7-48 Problem 83.arrow_forward
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