if you push a box across the floor its "physics works" but if you push on the wall its not. which of the following choices best explains why?

Q: 1. A passenger in a moving car tends to move forward when the car suddenly stops. A book on top of a…

A: Introduction: Newton's first law states that, a body continues to stay in a state of rest or motion…

Q: read if. Part b) has the elevator accelerating up at 1.5 m/s?, while part c) has it accelerating…

A: Weight of the passenger when the elevator is at rest 572 kg. Case 1: Elevator is moving up at…

Q: A box containing some stones is resting on a rough inclined surface. Which of the following actions…

A: newton's laws of motion

Q: 1. A 64.0-kg person stands on a bathroom scale that is on the floor of an elevator. The scale reads…

A:

Q: 9. A person with a mass of 65 kg is standing on a crate that has a mass of 35 kg. The crate is…

A: option (A) 980 N

Q: Part A Determine the weight of the box. Express your answer to three significant figures and include…

A: Solution: part A. The weight of an object can be obtained by the following relation: W=mg…

Q: If a ball is moving then it will not stop until and unless an external force is applied. And it is…

A: According to Newton's first law or law of inertia an object will remain in its state of uniform…

Q: When an ice hockey puck weighing 90 g is stationary on the ice, a minimal force of 0.2 N is…

A: Draw the free-body diagram of the puck.

Q: 1

A: When mass 2 is released, it will move downward with the given acceleration a. Use Newton's second…

Q: (a) Illustrate the free-body diagrams of both the cart and the bucket. (b) If the system has…

A:

Q: A 70-kg person stands next to a 210-kg barrel on frictionless ice. The person pushes against the…

A: Mass of person = 70 kg Mass of barrel = 210 kg Force with which the person pushes the barrel = 150 N

Q: Two skydivers jump from a plane at the same time. Skydiver 1 has a mass of 50 kg and Skydiver 2 has…

A: Terminal velocity of skydivers

Q: #1

A:

Q: Rank the following objects based on the Net Force they experience. Put them in order from least…

A: The Net force with net horizontal Fx and vertical force Fy is given by, F=Fx2+Fy2

Q: Three friends push on a 50 kg rock on very slippery ice. One friend pushes to the North with a force…

A:

Q: A person stands on a scale inside an elevator at rest. The scale reads 700 N. a) What is the persons…

A: The figure is shown below:

Q: Two masses are connected by a string and pulled along a frictionless surface by another string to…

A:

Q: Normal, friction and drag are sometimes called "contact" forces because objects (fluids like air…

A: In this question we have to give examples of no-contact forces. Please give positive feedback if the…

Q: A woman is straining to lift a large crate, without success. It is too heavy. We denote the forces…

A: In an equilibrium, The net force acting on an object is zero The object will respond to a newer…

Q: The set of equations below are the horizontal (x-) and vertical (y-) component forms of Newton's 2nd…

A: Given,The set of equations:Along horizontal:(5 kg ) ax = 50 N cos (30°) + FF on O cos (90°)+ 5…

Q: The wedge supports a mass m and between them there is a coefficient of friction µk. The wedge with…

A: Here, we apply Newton's second law after drawing the free body diagrams of both bodies.

Q: A book of mass m1 1.2 kg is stacked on another book of mass m2 = 2.8 kg, which rests on a…

A: Given, Mass of block m1 = 1.2 Kg Mass of block m2 = 2.8 Kg Coefficient of friction μ=0.8 Free body…

Q: Which of the following best describes the reason that a car can stop more quickly on dry pavement…

A: Car stops more quickly on dry pavement than on icy pavement: When car drives on ice pavement it…

Q: 15. Why does an object in motion remain in motion, while an object at rest, rem O The object is…

A:

Q: Internal force holds together the particles as a single object. a) True b) False

A: True

Q: The force of air drag experienced by a falling objects depends on two things. First the speed of the…

A: 2nd is the weight due to gravity pulling the object towards earth

Q: Two students on rollerskates stand face-to-face, then push each other away. One student has a mass…

A:

Q: There are three masses: m0 at the orgin, m1 at (a,0) and m2 at (0,-b). What is the force on m0 due…

A:

Q: If the acceleration of an object is zero,are no forces actingon it? Explain.

A: The acceleration of the object is given as a=0

Q: Starting from rest, there are exactly six constant forces acting on a space drone: A 15 N force in…

A: A particle at rest is being acted upon by various forces in x and y directions . We need to…

Q: In which case would it be easier to lift a cement truck: on Earth's surfade or on the Moon's…

A:

Q: A rope of negligible mass passes through a pulley of negligible mass and friction hanging from the…

A: a=m1-m2m1+m2g

Q: A 200 Kg bus sppeds along at 56 mph. The coefficient of friction between the tires and road is 0.8…

A:

Q: Box has constant velocty. The force exerted by the floor is Choices: mg + T cos θ mg mg − T sin θ…

A:

Q: A 15 kg steel ball is suspended at the air using 2 different types of cables. Cable is made up of…

A: Given Data : The mass of the steel ball is given as m = 15 Kg. The angle of cable A with the…

Q: A 6.00-kg block is in contact with a 4.00-kg block on a rough surface as shown in the figure. Total…

A: Mass of Block 1 (m1)=6kg Mass of block 2 (m2)=4kg Total friction force(f)=10N  force which pushes…

Q: (a) what can be said if the force experienced by the insect as compared to the force experienced by…

A: (a) In this case for comparing the force of insect and force experienced by car we can use the…

Q: An iron ball with mass 180g is attached to a chain that is 1.2m long, suspended at an angle of 55…

A: Draw the schematic diagram of the system.

Q: 16. A reaction force when you go up to a wall and push on it is that the wall pushes back on you.…

A: When i go up to a wall and push it with a certain force the the wall also govi me same amount of…

Q: David rolled down the window on his car while driving on the freeway. An empty plastic bag on the…

A: The Bernoulli's principle states that for an in-compressible fluid, the sum of pressure energy,…

Q: Which of the following statements is always true? a)?If an object is moving, an unbalanced force…

A: Given Differents statement are given We have to choose the correct option from given options.

Q: A farmer is using a rope and pulley to lift a bucket of water from the bottom of a well that is h, =…

A: Ans:- Image-1

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: