Lucy boards a crowded bus as it sits in the station. There are no available scats, so Lucy stands in the center aisle next to asupport pole. As the bus starts moving forward and picks up speed, Lucy holds the pole tightly to avoid fallingover backward.While the bus is speeding up, what is the direction of the total force (if any) on Lucy?O the total force is zeroO backwardO forwardAs the bus drives down a straight road at a constant specd, Lucy has no trouble keeping her balance.During this time, what is the direction of the total force (if any) on Lucy?backwardthe total force is zeroO forwardThe bus comes to a sudden stop at a red light, and Lucy grips the pole tightly to avoid falling over forward.During this time, what is the direction of the total force (if any) on Lucy?O the total force is zeroO forwardO backward

Answer:- The speed of bus will have the acceleration in forward direction. So, a…

Answered: Lucy boards a crowded bus as it sits in…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Similar questions

2. A mass of 2.50 kg is at rest at time = 0. Do not consider friction in this problem. Two vector forces are applied to the mass. What is the resulting vector acceleration? F1 = 2.40 i + 1.50 j Newtons. F2 = 5.00 Newtons at an angle of 25.0°with the positive X axis.
A 2100 kg truck has put its front bumper against the rear bumper of a 2400 kg SUV to give it a push. With the engine at full power and good tires on good pavement, the maximum forward force on the truck is 18,000 N. What is the maximum possible acceleration the truck can give the SUV? At this acceleration, what is the force of the SUV's bumper on the truck's bumper?
Your friend's 11.1 g tassel hangs on a string from his rear-view mirror. When he accelerates from a stoplight, the tassel deflects backwards toward the rear of the car. If the tassel hangs at an angle of 6.89° relative to the vertical, what is the acceleration of the car?
16. Running without friction is impossible. In fact, to maximize your acceleration, you need to maximize the static friction between your shoes and the floor. a) Explain why static friction is necessary for running or walking. requirement, employees' shoes must have a coefficient of static friction of 0.5 or more on a specified tile surface. In an emergency, what is the minimum time interval in which a postal worker starting from rest can move a distance of 3 m on the tile surface? c) A typical athletic shoe has a coefficient of static friction of 0.8 when used on a running track. What is the minimum time interval in which an athlete starting from rest can move a distance of 100 m on a running track? b) To meet a U.S. Postal Service
A crate is moving as shown is slowed down by a pushing force P. The force P has a horizontal component of 200 newtons to the left and a vertical component 300 newtons down. The mass of the crate is 90 kgs and the coefficient of kinetic friction is 0.2 and static friction is 0.4. V P What is the magnitude of the acceleration of the crate? Answer in m/s². Use g = 10 m/s². Don't guess! Use the free body diagram method.
Alice and Bob had car trouble. Their car broke down and Bob could not restart it. Alice got out to push the car and after some time she asked Bob if he would trade jobs with her for a while. Bob answered, "It won't matter if I do. I took physics, and I know that no matter how hard I push on the car, it will push back on me just as hard so I won't accomplish anything. That's Newton's Third Law and it is always true. It has been tested millions of times. It wouldn't matter if I pushed the car. I wouldn't be able to push it anywhere." Aside from the fact that his relationship with Alice is probably fınished, which of the following correctly explains a flaw in Bob's logic? The third law says that the two forces he is talking about are only approximately equal. The third law does not apply in this case because the car is on wheels. O The two forces he is talking about are on two different objects. Thw two forces will not be the same because the two masses are different. The third law only…
A box is placed on a rough floor. When you push horizontally against the box with a 40N force, the box just begins to slide. What is the magnitude of the friction force when you push against the box with a 25 N force? O58 N O 15 N O 40 N 98 N O none of the answers O 25 N
Find T₁ The hanging sphere off the table has a mass of 2.98 kg. The string makes a 27.1° angle to the ceiling. How much does the sphere weigh? N Find T₂ T₁ N N e N The block on the table does not move. How much friction must be acting between the table and the block?
FR2: A cat climbs up the side of a tree, tilted at a 10 degree angle relative to the vertical (the cat is on the top side). The cat’s claws dig into the tree bark, which pushes the cat up the tree. If the cat has a mass of 5 kg, how hard does it have to push into the tree in order to climb up at constant speed?

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