EBK PHYSICS OF EVERYDAY PHENOMENA
8th Edition
ISBN: 8220106637050
Author: Griffith
Publisher: YUZU
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 4, Problem 21CQ
The engine of a car is part of the car and cannot push directly on the car in order to accelerate it. What external force acting on the car is responsible for the acceleration of the car on a level road surface? Explain.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
If the acceleration of a system is zero, are no external forces acting on it? What about internal forces? Explain your answers.
13.A 400kg log flume ride is moving at 3 m/sec on the top of a 35-meter hill when it
slides down into a pool of water making a huge splash. The log splashes for a
distance of 40 meters before coming to a stop. What is the coefficient of friction
for the level log/water level part of surface?
35 m
40 m
A swimmer has just jumped off a diving board. The swimmer has a mass of m = 56.4 kg and jumps off a board that is h = 7.15 m above the water. Exactly T = 4.1 seconds after entering the water, her downward motion is stopped.
a) Write an expression for the magnitude of the average upward force Fw exerted on her by the water in terms of the variables given in the problem statement and g (9.80 m/s2).
b) What is the magnitude of the average upward force Fw (in N) exerted on her by the water?
Chapter 4 Solutions
EBK PHYSICS OF EVERYDAY PHENOMENA
Ch. 4 - Did Galileos work on motion precede in time that...Ch. 4 - Why did Aristotle believe that heavier objects...Ch. 4 - Aristotle believed that a force was necessary to...Ch. 4 - How did Aristotle explain the continued motion of...Ch. 4 - Did Galileo develop a more complete theory of...Ch. 4 - Two equal forces act on two different objects, one...Ch. 4 - A 3-kg block is observed to accelerate at a rate...Ch. 4 - Two equal-magnitude horizontal forces act on a box...Ch. 4 - Is it possible for the final temperature of the...Ch. 4 - Suppose that a bullet is fired from a rifle in...
Ch. 4 - Two equal forces act on an object in the...Ch. 4 - An object moving horizontally across a table is...Ch. 4 - A car goes around a curve traveling at constant...Ch. 4 - Is Newtons first law of motion explained by the...Ch. 4 - Is the mass of an object the same thing as its...Ch. 4 - The gravitational force acting on a lead ball is...Ch. 4 - The acceleration due to gravity on the moon is...Ch. 4 - Is mass a force? Explain.Ch. 4 - Two identical cans, one filled with lead shot and...Ch. 4 - A boy sits at rest on the floor. What two vertical...Ch. 4 - The engine of a car is part of the car and cannot...Ch. 4 - It is difficult to stop a car on an icy road...Ch. 4 - A ball hangs from a string attached to the...Ch. 4 - Would the tablecloth trick (see everyday...Ch. 4 - When a magician performs the tablecloth trick (see...Ch. 4 - A sprinter accelerates at the beginning of a...Ch. 4 - A mule is attempting to move a cart loaded with...Ch. 4 - The upward normal force exerted by the floor on a...Ch. 4 - A toy battery-powered tractor pushes a book across...Ch. 4 - If you get into an elevator on the top floor of a...Ch. 4 - If the elevator cable breaks and you find yourself...Ch. 4 - Two masses, m1 and m2, connected by a string, are...Ch. 4 - Two blocks with the same mass are connected by a...Ch. 4 - Suppose that a skydiver wears a specially...Ch. 4 - Prob. 35CQCh. 4 - Prob. 36CQCh. 4 - Prob. 1ECh. 4 - Prob. 2ECh. 4 - Prob. 3ECh. 4 - Prob. 4ECh. 4 - Prob. 5ECh. 4 - Prob. 6ECh. 4 - Prob. 7ECh. 4 - Prob. 8ECh. 4 - Prob. 9ECh. 4 - Prob. 10ECh. 4 - Prob. 11ECh. 4 - Prob. 12ECh. 4 - One of the authors of this text has a weight of...Ch. 4 - Prob. 14ECh. 4 - Prob. 15ECh. 4 - Prob. 16ECh. 4 - Prob. 17ECh. 4 - Prob. 18ECh. 4 - Prob. 19ECh. 4 - Prob. 1SPCh. 4 - Prob. 2SPCh. 4 - Prob. 3SPCh. 4 - Prob. 4SPCh. 4 - Prob. 5SPCh. 4 - Prob. 6SPCh. 4 - Prob. 7SP
Knowledge Booster
Learn more about
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 block of ice (m = 15.0 kg) with an attached rope is at rest on a frictionless surface. You pull the block with a horizontal force of 95.0 N for 1.54 s. a. Determine the magnitude of each force acting on the block of ice while you are pulling. b. With what speed is the ice moving after you are finished pulling? Repeat Problem 71, but this time you pull on the block at an angle of 20.0.arrow_forwardA 0.500-kg potato is fired at an angle of 80.0 above the horizontal from a PVC pipe used as a “potato gun” and reaches a height of 110.0 m. (a) Neglecting air resistance, calculate the potato’s velocity when it leaves the gun. (b) The gun itself is a tube 0.430 m long. Calculate the average acceleration of the potato in the tube as it goes from zero to the velocity found in (a). (c) What is the average force on the potato in the gun? Express your answer in newtons and as a ratio to the weight of the potato.arrow_forwardReview. The first stage of a Saturn V space vehicle consumed fuel and oxidizer at the rate of 150 104 kg/s with an exhaust speed of 2.60 101 m/s. (a) Calculate the thrust produced by this engine. (b) Find the acceleration the vehicle had just as it lifted off the launch pad on the Earth, taking the vehicles initial mass as 3.00 106 kg.arrow_forward
- An object of mass m = 1.00 kg is observed to have an acceleration a with a magnitude of 10.0 m/s2 in a direction 60.0 east of north. Figure P4.29 shows a view of the object from above. The force F2 acting on the object has a magnitude of 5.00 N and is directed north. Determine the magnitude and direction of the one other horizontal force F1 acting on the object. Figure P4.29arrow_forward1) A bartender slides a mug of beer with mass 0.2 kg down a smooth, level bar. The mug leaves the bartender's hand at an initial velocity of 2.8m/s. As the mug slides, it slows down due to the effect of friction between the mug and bar. The mug just comes to rest in the customer’s hand 1.0 m away from the bartender. Calculate the magnitude and direction of the frictional force acting on the mugarrow_forward83. ..•Calc With its sails fully deployed, a 100-kg sail- boat (including the passenger) is moving at 10 m/s when the mast suddenly snaps and the sail collapses. The boat immediately starts to slow down due to the resistive drag force of the water on the boat. After 5 s, the boat's speed is only 6 m/s. If the drag force of the water is propor- tional to the speed of the boat, calculate how long it will take before the boat has a speed of 0.5 m/s.arrow_forward
- A 50-kg cart is rolling across the floor with an initial speed of 4 m/s toward a glass window which is 5 m away. Unless you push against the cart to help stop the cart will not stop in time to keep from rolling into the window. The coefficient of friction against the cart is 0.15. You step in front of the cart and push against the motion. You will find what force you need to push in order to stop the cart in a distance of 5 m. what is the net force? what is the force of friction on the cart? what is the force of the push?arrow_forward10 of 31 Listen Study the scenario. A car is moving along a frictionless surface with a speed of 2 m/s to the left. You and your friend each come over and push the car at the same time. You exert a force of 6 N to the left, while your friend exerts a force of 6 N to the right. According to Newton's first law, how will this action affect the car's motion? The car will speed up because your force is in the same direction of the car's motion, making it speed up. The car will stop immediately because two balanced forces will cause an object to stop moving. The car will continue moving to the left but at a slower speed because your friend's force is going to make the car slow down. The car will continue to move 2 m/s to the left because there are balanced forces acting on it.arrow_forwardTwo bows, A and B, are used to fire arrows X and Y respectively. The average force bow A exerts is twice that of bow B and arrow X has half the mass of arrow Y. Compare the acceleration of the arrows. Question 9 options: 1) Arrow Y will have twice the acceleration of arrow X. 2) Both arrows will have the same acceleration. 3) Arrow X will have four times the acceleration of arrow Y. 4) Arrow Y will have four times the acceleration of arrow X. 5) Arrow X will have half the acceleration of arrow Y.arrow_forward
- A rope exerts a constant horizontal force of 280 N to pull a 50kg crate across the floor. the velocity of the crate is observed to increase from 1m/s to 7m/s in a time of 2 seconds under the influence of this force and the frictional force exerted by the floor on the crate. What force would have to be applied to the crate by the rope in order for the crate to move with constant velocity? Explainarrow_forwardThe experimental technique for measuring the coefficient of kinetic friction requires that a material be sent with a specified velocity across a level surface of a second material, often with a need for a long race track. In a particular case a hockey puck is instantly hit by an electronic plunger and given a velocity of 40.1 m/s, slowing to a stop on a polished oak floor in a distance of 221.7 m. Determine the coefficient of kinetic friction for the hockey puck and polished oak floor. 1 221.7m V=40.1mlsarrow_forward8. Figure 7 shows a four-wheel drive car of mass m = 970 kg. The coefficients of friction is u= 0.6. Neglect the mass of the tyres. (a) Determine the greatest possible acceleration of the race car so that its front tyres do not kave the ground nor the tyres slip on the track. (b) Determine the corresponding reactions an tyres A and B. (c) From (b) above, recaleulate the coefficient of friction. If it is not same as either the given values s or Hk, then in one sentence, state or explain why the difference in values? IF0.55 m F 1.82 m b= 2.20 m Figure 7arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Classical Dynamics of Particles and SystemsPhysicsISBN:9780534408961Author:Stephen T. Thornton, Jerry B. MarionPublisher:Cengage Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Classical Dynamics of Particles and Systems
Physics
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Newton's Second Law of Motion: F = ma; Author: Professor Dave explains;https://www.youtube.com/watch?v=xzA6IBWUEDE;License: Standard YouTube License, CC-BY