Additional Integrated Problems
A child’s sled has rails that slide with little friction across the snow. Logan has an old wooden sled with heavy iron rails that has a mass of 10 kg—quite a bit for a 30 kg child! Logan runs at 4.0 m/s and leaps onto the stationary sled and holds on tight as it slides forward. The impact time with the sled is 0.25 s.
a. Immediately after Logan jumps on the sled, how fast is it moving?
b. What was the force on the sled during the impact?
c. How much energy was “lost” in the impact? Where did this energy go?
Want to see the full answer?
Check out a sample textbook solutionChapter P Solutions
College Physics: A Strategic Approach (3rd Edition)
Additional Science Textbook Solutions
Organic Chemistry (8th Edition)
Cosmic Perspective Fundamentals
Introductory Chemistry (6th Edition)
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
Microbiology: An Introduction
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
- Scientists and engineers must interpret problems from various sources. We can practice this skill anytime we read a newspaper or magazine or browse the Internet. Consider the Rocket Car urban legend that can be found on many Internet sites, in which the Arizona Highway Patrol allegedly found the vaporized wreckage of an automobile. The story goes that after some analysis and investigation, it was believed that a former Air Force Sergeant attached solid-fuel rockets to his 1967 Chevy Impala and ignited the rockets approximately 3.9 miles from the crash site. The vehicle quickly reached a speed of approximately 275 mph. It continued at this speed for 20 to 25 seconds. The car remained on the highway for 2.6 miles before the driver applied the brakes. The brakes melted and the tires blew out, causing the vehicle to become airborne. It traveled through the air for 1.3 miles before it hit a cliff face 125 feet above the road. Of course, this story was debunked. It is physically implausible, but it can still provide an opportunity to practice analyzing a problem. a. C Draw a Sketch of the Situation. b. C For the constant-velocity part of the cars motion, identify initial and final positions, the velocity, and the time interval. c. N Calculate the displacement using the position data and then again using the velocity and time data. Are your results consistent? d. C If your results are not consistent, reread the legend and identify possible sources of the discrepancy.arrow_forwardI need helparrow_forwardAn air-track cart with mass m1 = 0.22 kg and initial speed vo= 0.95 m/s collides with and sticks to a second cart that is at rest initially. Part A If the mass of the second cart is m2 = 0.43 kg, how much kinetic energy is lost as a result of the collision? Express your answer to two significant figures and include appropriate units. Templates Symbols undo redo reset keyboard shortcuts help Value Unitsarrow_forward
- ACTIVITY 2 POSSIBLE AND IMPOSSIBLE COLLISIONS The table below shows the motion of two objects before collision and the 4 diagrams that represent the motion of the two objects after collision. Compute for their KE before and after collision to identify whether the collision is POSSIBLE OR NOT POSSIBLE. Support your answers with a mathematical solution. Before Collision After Collision Possible or Impossible Collision 1 m's 5 mis 8kg 4kg KE fter 9 mis 4kg 6 mis KEher= Skg 8 mis 5 m/s Skg KEbefore = 3 mis 9 m's Skg 4kg KEafter Class comm I mis Bkg 4kg a class comn KEnerarrow_forwardA 800 kg cart is rolling to the right at 1.10 m/s. A 70.0 kg man is standing on the right end of the cart. Part A What is the speed of the cart if the man suddenly starts running to the left with a speed of 8.00 m/s relative to the cart? Express your answer with the appropriate units. μA Value Submit Units Request Answer ?arrow_forwardReview I Constants Three objects A, B, and C are moving as shown in the figure below (Figure 1). Assume that vA = 12.0 m/s, VB = 9.0 m/s, and vc = 3.2 m/s. Part E %3D Find the x-component of the net momentum of the particles if we define the system to consist of all three objects. Express your answer in kilogram meters per second. ? Px = kg · m/s Submit Request Answer Part F Figure 1 of 1 Find the y-component of the net momentum of the particles if we define the system to consist of all three objects. Express your answer in kilogram meters per second. A ? 5.0 kg B 60° 6.0 kg 10.0 kg Ру kg m/s %3D Submit Request Answerarrow_forward
- A football punter accelerates a 0.55 kg football from rest to a speed of 8.0 m/s in 0.25 s. a.What constant force does the punter exert on the ball? b.What is the change in momentum of the footballarrow_forwardThomas the train traveling at 25.0 m/s sights Percy the train 200 m ahead on the same track. Percy is traveling at 15.0 m/s in the same direction as Thomas. Thomas immediately applies the brakes and was able to slow down by 0.100 m/s2 while the Percy unknowingly continues with constant speed. Take x = 0 at the location of Thomas he applies the brakes. (a) Will there be a collision? (b) If so, where will it take place?arrow_forwardContext We want to calculate the time that will elapse before two vehicles collide. The two vehicles go through an uniformly Accelerated Motion (UAM). Constraints Vehicle A is initially at the origin and moving at constant speed. Vehicle B initially lies on the positive side of the x axis and has an initial speed of zero. Modelization Build the model that calculates the moment of collision between the two vehicles. Then test your model using the following values: The vehicle A's initial speed is 3.7 m/s The initial position of vehicle B is 213 meters The vehicle B's acceleration is -2.01 m/s^2arrow_forward
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-HillPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning