College Physics
OER 2016 Edition
ISBN: 9781947172173
Author: OpenStax
Publisher: OpenStax College
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Chapter 4, Problem 15PE
What net external force is exerted on a 1100-kg artillery shell fired from a battleship if the shell is accelerated at
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What net external force is exerted on a 1100-kg artillery shell fired from a battleship if the shell is accelerated at 2.40×10 m/s? What is the magnitude of the force exerted on the ship by the artillery shell?
Superman must stop a 130-km/hkm/h train in 110 mm to keep it from hitting a stalled car on the tracks. The train's mass is 3.6 ×× 105 kgkg.
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Compare the magnitudes of the force exerted on the train and the weight of the train (give as %%).
How much force does the train exert on Superman?
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Chapter 4 Solutions
College Physics
Ch. 4 - Propose a force standard different from the...Ch. 4 - What properties do forces have that allow us to...Ch. 4 - How are inertia and mass related?Ch. 4 - What is the relationship between weight and mass?...Ch. 4 - Which statement is correct? (a) Net force causes...Ch. 4 - Why can we neglect forces such as those holding a...Ch. 4 - Explain how the choice of the “Stem of interest”...Ch. 4 - Describe a situation in which the net external...Ch. 4 - A system can have a nonzero velocity while the net...Ch. 4 - A rock is thrown straight up. What is the net...
Ch. 4 - (a) Give an example of different net external...Ch. 4 - If the acceleration of a system is zero, are no...Ch. 4 - If a constant, nonzero force is applied to an...Ch. 4 - The gravitational force on the basketball in...Ch. 4 - When you take off in a jet aircraft, there is a...Ch. 4 - A device used since the 1940s to measure the kick...Ch. 4 - Describe a Situation in which one a force on and,...Ch. 4 - Why does an ordinary rifle recoil (kick backward)...Ch. 4 - An American football lineman reasons that it is...Ch. 4 - Newton's third law of motion tells us that forces...Ch. 4 - If a leg is suspended by a traction setup as shown...Ch. 4 - Ina traction setup a broken bone, with pulleys and...Ch. 4 - To simulate the apparent weightlessness of space...Ch. 4 - A cartoon shows the toupee coming off the head of...Ch. 4 - Explain, in terms of the properties of the four...Ch. 4 - What is the dominant force between astronomical...Ch. 4 - Give a detailed example of the exchange of a...Ch. 4 - A 63.0-kg sprinter starts a race with an...Ch. 4 - If the sprinter from the previous problem...Ch. 4 - A cleaner pushes a 4.50-kg laundry cart in such a...Ch. 4 - Since astronauts in orbit are apparently...Ch. 4 - In Figure 4.7, the net external force on the 24-kg...Ch. 4 - The same rocket sled drawn in Figure 4.31 is...Ch. 4 - (a) If the rocket sled shown in Figure 4.32 starts...Ch. 4 - What is the deceleration of the rocket sled if it...Ch. 4 - Suppose two children push horizontally, but in...Ch. 4 - A powerful motorcycle can produce an acceleration...Ch. 4 - The rocket sled shown in Figure 4.33 accelerates...Ch. 4 - Repeat the previous problem for the situation in...Ch. 4 - The weight of an astronaut plus his space suit on...Ch. 4 - Suppose the mass of a fully loaded module in which...Ch. 4 - What net external force is exerted on a 1100-kg...Ch. 4 - A brave but inadequate rugby player is being...Ch. 4 - Two teams of nine members each engage in a tug of...Ch. 4 - What force does a trampoline have to apply to a...Ch. 4 - (a) Calculate the tension in a vertical strand of...Ch. 4 - Suppose a 60.0-kg gymnast climbs a rope. (a) What...Ch. 4 - Show that, as stated in the text, a force F...Ch. 4 - Consider the baby being weighed in Figure 4.34....Ch. 4 - A 5.00105 -kg rocket is accelerating straight up....Ch. 4 - The wheels of a midsize car exert a force of 2100...Ch. 4 - Calculate the force a 70.0-kg high jumper must...Ch. 4 - When landing after a spectacular somersault, a...Ch. 4 - A freight train consists of two 8.00104 -kg...Ch. 4 - Commercial airplanes are sometimes pushed out of...Ch. 4 - A 1100-kg car pulls a boat on a trailer. (a) What...Ch. 4 - (a) Find the magnitudes of the forces F1 and F2...Ch. 4 - Two children pull a third child on a snow saucer...Ch. 4 - Suppose your car was mired deeply in the mud and...Ch. 4 - What force is exerted on the tooth in Figure 4.38...Ch. 4 - Figure 4.39 shows Superhero and Trusty Sidekick...Ch. 4 - A nurse pushes a cart by exerting a force on the...Ch. 4 - Construct Your Own Problem Consider the tension in...Ch. 4 - Construct Your Own Problem Consider people pushing...Ch. 4 - Unreasonable Results (a) Repeat Exercise 4.29, but...Ch. 4 -
Ch. 4 - A flea jumps by exerting a force of 1.20105 N...Ch. 4 - Two muscles in the back of the leg pull upward on...Ch. 4 - A 76.0-kg person is being pulled away from a...Ch. 4 - Integrated Concepts A 35.0-kg dolphin decelerates...Ch. 4 - Integrated Concepts When starting a foot race, a...Ch. 4 - Integrated Concepts A large rocket has a mass of...Ch. 4 - Integrated Concepts A basketball player jumps...Ch. 4 - Integrated Concepts A 2.50-kg fireworks shell is...Ch. 4 - Integrated Concepts Repeat Exercise 4.47 for a...Ch. 4 - Integrated Concepts An elevator filled with...Ch. 4 - Unreasonable Results (a) What is the final...Ch. 4 - Unreasonable Results A 75.0-kg man stands on a...Ch. 4 - (a) What is the strength of the weak nuclear force...Ch. 4 - (a) What is the ratio of the strength of the...Ch. 4 - What is the ratio of the strength of the strong...Ch. 4 - Prob. 1TPCh. 4 - Prob. 2TPCh. 4 - Prob. 3TPCh. 4 - Prob. 4TPCh. 4 - Prob. 5TPCh. 4 - Prob. 6TPCh. 4 - Prob. 7TPCh. 4 - Prob. 8TPCh. 4 - Prob. 9TPCh. 4 - Prob. 10TPCh. 4 - Prob. 11TPCh. 4 - Prob. 12TPCh. 4 - Prob. 13TPCh. 4 - Prob. 14TPCh. 4 - Prob. 15TPCh. 4 - Prob. 16TPCh. 4 - Prob. 17TPCh. 4 - Prob. 18TPCh. 4 - Prob. 19TPCh. 4 - Prob. 20TPCh. 4 - Prob. 21TPCh. 4 - Prob. 22TPCh. 4 - Prob. 23TPCh. 4 - Prob. 24TPCh. 4 - Prob. 25TPCh. 4 - Prob. 26TPCh. 4 - Prob. 27TPCh. 4 - Prob. 28TPCh. 4 - Prob. 29TPCh. 4 - Prob. 30TPCh. 4 - Prob. 31TPCh. 4 - Prob. 32TPCh. 4 - Prob. 33TPCh. 4 - Prob. 34TP
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- What net external force is exerted on a 1100-kg artillery shell fired from a battleship if the shell is accelerated at 2.40 x 10^4 m/s^2 ? What force is exerted on the ship by the artillery shell?arrow_forwardA loaded tractor-trailer with a total mass of 5500 kg traveling at 2.5 km/h hits a loading dock and comes to a stop in 0.56 s . What is the magnitude of the average force exerted on the truck by the dock?arrow_forwardProblem 14. A 3800-kg jet touches down at 240 km/h on the deck of an aircraft carrier, and immediately deploys a parachute to slow itself down. If the plane comes to a stop in 170 m, what is the average force of air on the parachute? Assume the parachute provides essentially all the stopping force.arrow_forward
- A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun powder. What is the average force (in N) exerted on a 0.0500 kg bullet to accelerate it to a speed of 525 m/s in a time of 1.60 ms (milliseconds)? (Enter the magnitude.) Answer in N.arrow_forwardA 147-Newton horizontal force is exerted upon a 3.1-kg box to move it across a level surface at a constant velocity of 1.4 m/s. The force of friction encountered by the box is Newton. O 47 105 4.84 O 147arrow_forwardA machine gun fires 35.0g bullets at a speed of 750.0 ms-1. If the gun can fire 200 bullets/ min, what is the average force the shooter must exert to keep the gun from moving?arrow_forward
- After falling from rest from a height of 31 m, a 0.60-kg ball rebounds upward, reaching a height of 21 m. If the contact between ball and ground lasted 2.5 ms, what average force was exerted on the ball?arrow_forwardA car of mass 1.2 103 kg is traveling east at a speed of 24 m/s along a horizontal roadway. When its brakes are applied, the car stops in 5.3 s. What is the average horizontal force exerted on the car while it is braking?arrow_forwardA high-speed photograph of a club hitting a golf ball. The club was in contact with a ball, initially at rest, for about 0.0043 s. If the ball has a mass of 55 g and leaves the head of the club with a speed of 1.8 ✕ 102 ft/s, find the average force (in kN) exerted on the ball by the club. kNarrow_forward
- In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 45m/s (about 100mi/h) in a time of 7.0s. The combined mass of the car and riders is 5.5×103kg. Find the average net force exerted on the car and riders by the magnets.arrow_forwardA rock of mass m = 1.9 kg is released from a height of h = 3.2 m into a basin of water. At a time of t = 1.17 s after striking the surface of the water, the rock's velocity has decreased by 50%.What is the magnitude of the average force the rock experiences, in newtons, during the time t? F ave=arrow_forwardAn airplane of mass 1.50 x 104 kg is in level flight, initially moving at 60.0 m/s. The resistive force exerted by air on the airplane has a magnitude of 4.0 x 104 N. By Newton’s third law, if the engines exert a force on the exhaust gases to expel them out of the back of the engine, the exhaust gases exert a force on the engines in the direction of the airplane’s travel. This force is called thrust, and the value of the thrust in this situation is 7.50 x 104 N. (a) Is the work done by the exhaust gases on the airplane during some time interval equal to the change in the airplane’s kinetic energy? Explain. (b) Find the speed of the airplane after it has traveled 5.0 x 102 m.arrow_forward
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