Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest. Rank from largest to smallest. To rank items as equivalent, overlap them. If the ranking cannot be determined, check the box below. • View Available Hint(s) Reset Help 500 kg 1000 kg 2000 kg 4000 kg 1000 kg 500 kg 20 m/s 20 m/s 5 m/s 5 m/s 10 m/s 10 m/s

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest. Rank from largest to smallest. To rank items as equivalent, overlap them. If the ranking cannot be determined, check the box below. • View Available Hint(s) Reset Help 500 kg 1000 kg 2000 kg 4000 kg 1000 kg 500 kg 20 m/s 20 m/s 5 m/s 5 m/s 10 m/s 10 m/s

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter4: Forces In One Dimension

Section: Chapter Questions

Problem 70A

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Imagine trying to push a heavy sofa across the room. At first you have difficulty getting the sofa to budge, but once it starts to move your task becomes easier. a. Does the sofa accelerate for a moment after you get it moving? b. Use what you now know about static and kinetic friction to explain what is going on. Why wont the sofa move at first? Why do you have to apply a stronger and stronger force to get it to move? Why is the force you must apply to keep the sofa moving less than the force you applied just at the instant motion began?
Train Collision and Newtons First Law A group of college students discusses the train collision case study. Use Newtons first law to decide which underlined statements are correct and which are false. Explain your answers. Shannon: This newspaper says that the people who got really hurt were either standing up or sitting in a forward-facing seat. Those people got thrown forward when the train stopped. Avi: Thats why there are seat belts in cars. If you get into a crash, the force can throw you through the windshield. Cameron: There is no force that throws you through the windshield. You fly through the windshield because you are already moving and it would take a force to stop you from going forward. Thats why theres a seat belt. Avi: That doesnt make sense. Because then you would need a force to stop you from flying through the windshield even when you just stop slowly at a red light. Cameron: Thats right, but when you slow down slowly, you dont need such a big force and the car seat can take care of it. Shannon: The seat? I dont think a seat can exert a force. It cant move on its own or hold you. Thats why the people who were sitting forward on the train were hurt. The people who were sitting backward had the back of the seat to block them.
When you learn to drive, you discover that you need to let up slightly on the brake pedal as you come to a stop or the car will stop with a jerk. Explain this in terms of the relationship between static and kinetic friction.
When a 1.50-kg dress hangs midway from a taut clothesline stretched between two poles planted 7.50 m apart, the clothesline is seen to sag 0.0500 m. a. Draw a free-body diagram of the dress. b. What is the tension produced on the clothesline by the dress? Assume the clothesline is massless.
Imagine a person kayaking across a lake . Can you name a force pair at work? Also explain which one of Newton's Laws this describes.
Figure below shows an overhead view of 0.0250 kg lemon half and two of the three horizontal forces that act on it as it is on a frictionless table. Force −→F1 has a magnitude of 6 N and is at θ1 = 30◦. Force −→F2 has a magnitude of 7 N and is atθ2 = 30◦. In unit-vector notation, what is the third force if the lemon half (a) is stationary, (b) has the varying velocity−→v = 13t ˆi − 14t ˆj m/s2, where t is time?
The rocket sled shown in Figure 4.5 accelerates at a rate of 27.0 m/s2. Its passenger has a mass of 68.0 kg. (a) Calculate the horizontal component of the force the seat exerts against his body. N (forward)Compare this with his weight by giving a ratio. (force/weight)(b) Calculate the direction and magnitude of the total force the seat exerts against his body. ° (counterclockwise from the direction of the sled is positive) N
Tom enlists the help of his friend John to move his car. They apply forces to the car as shown in the diagram. Here F1 = 437 N and F2 = 365 N and friction is negligible. In the diagram below, the mass of the car = 3500 kg, θ1 = −25° and θ2 = 12°. (Assume the car faces the positive x-axis before the forces are applied.) (a) Find the resultant force (in N) exerted on the car. -magnitude: N - direction: (counterclockwise from the +x-axis) ° (b) What is the acceleration (in m/s2) of the car? - magnitude: m/s2 - direction: (counterclockwise from the +x-axis)
Kindly solve the problem and please include the following: Free body diagram of each block or tension Vector system representation Derivation of (Summation X and Y) Solution( Please be detailed and enumerate all the process because i’m going to study that soon ,don’t just give me an answer) Lastly i prefer you to answer that in a very clean paper to illustrate the problem properly. Thanks in advance Keep safe
Tom enlists the help of his friend John to move his car. They apply forces to the car as shown in the diagram. Here F1 = 445N and F2 = 331N and friction is negligible. In the diagram below, the mass of the car = 3500 kg, θ1 = −25° and θ2 = 12°. (Assume the car faces the positive x-axis before the forces are applied.) (a) Find the resultant force (in N) exerted on the car. -magnitude: N - direction: (counterclockwise from the +x-axis) ° (b) What is the acceleration (in m/s2) of the car? - magnitude: m/s2 - direction: (counterclockwise from the +x-axis)
A student with a mass of 45 kg stands on a bathroom scale in an elevator. What can you say about the motion of the elevator at the moment that the bathroom scale reads 360 N? Use a force diagram and be as precise as you can when answering. Find the exact acceleration.
Monkey D. Luffy is sailing together with his crew, the “Straw Hat Pirates” in the West Philippine Sea. Thewind is quite strong and is exerting a 420N force on their sailboat “Thousand Sunny” directed to the south.The waves are also exerting a force of 200N westward. If Thousand Sunny has a mass of 305 kg (including thecrew and their luggages), what is the magnitude and direction of its acceleration?