While moving into his new house, Voytek is sliding a heavy box of books across his bedroom floor.  He turns to his little sister, Silvia, and says:   “It is always harder to start to move an object that is initially at rest across a horizontal surface than it is to keep that same object moving.”   Which statement correctly explains this effect

Q: A person sits in a chair that is free to rotate without friction. In their hands, they hold two…

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Q: Two blocks of masses ml and m2, with m1 has greater mass than m2, are placed in contact with each…

A: Given system consists of masses m1 and m2, so the mass of the system is M=m1+m2 Apply Newton's law…

Q: of mass 77.7 kg stands on one end of a diving board of mass 26.8 kg, as shown in the diagram.…

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Q: man inside the elevator stands in a weighing scale and weighs 120 N when stationary. What will be…

A: According to Newton's second law Net force F = ma

Q: 1

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

Q: In the figure, a man is trying to get his car out of mud on the shoulder of a road. He ties one end…

A: Given Data: The distance between the front bumper and the utility pole is, D=18 m The force at the…

Q: Action! Consider a cup is at rest on top of a table. Which of the following is an example of an…

A: Given that, The cup is at rest on top of a table.

Q: Objects with masses m1 = 13.0 kg and m2 = 6.0 kg are connected by a light string that passes over a…

A: Given data: The masses are given as, m1 = 13.0 kg and  m2 = 6.0 kg  m2 falls in d =1.00 m in t =…

Q: Two blocks of masses m1=4kg and m2=3kg are placed in contact with each other on a frictionless…

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Q: The figure shows a 2400 kg cable car descending a high hill. A counterweight of mass 2200 kg on the…

A: Mass of cable car (M)=2400 kg Counterweight mass (m)=2200 kg Acceleration due to gravity (g)=9.8…

Q: Two objects of masses m, = 3 kg and m2 = 7 kg are hung vertically over a frictionless pulley and…

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Q: the horizontal as shown in the figure. The coefficient of static friction between the block and the…

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Q: While playing basketball in PE class, Michael Angelo lost his balance after making a lay-up and…

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Q: Two masses are connected by a massless string and hang vertically from a massless pulley. Both…

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Q: A hockey puck slides with constant velocity, from point “a” to point “b” along a frictionless…

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Q: Two constant forces are applied to a 5 kg block that is initially at rest on a frictionless and…

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Q: ver of mass 64.7 kg stands on one end of a diving board of mass 34.2 kg, as shown in the diagram.…

A: GivenMass of diver, mD=64.7 kgMass of diving board , mB=34.2 kg

Q: The wheels of an automobile are locked as it slides to a stop from an initial speed of 30.0 m/s. If…

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Q: In the figure, a man is trying to get his car out of mud on the shoulder of a road. He ties one end…

A:

Q: A curling rock of mass 20 kg is sliding along a frictionless ice surface when it strikes a rock half…

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Q: The diagram shows a trolley used to transport a load of 400 N. A force F vertically downwards is…

A: In the attached diagram, the trolley as shown is a machine of class first lever as it has the pivot…

Q: A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…

A: Given(s): Mass of the box, m=4.0 kg Height raised, h=4 m Moving at a constant speed of 5.0 m/s.…

Q: A 1100-kg elevator is rising and its speed is increasing at 3.0 m/s2. The tension in the elevator…

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

Q: Four objects with different masses and velocity are launched horizontally off the edge of four…

A: We have objects with initial horizontal velocities u=40, 20, 50 m/s launched from a height h=250,…

Q: The figure shows two blocks connected by a cord (of negligible mass) that passes over a frictionless…

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Q: A 10-kg mass and a 2.0-kg mass are connected by a light string over a massless, frictionless pulley.…

A:

Q: The masses of the Atwood's machine are M = 7.563 kg and m = 2.214 kg. The acceleration (m/s2) of the…

A: M = 7.563 kg and m = 2.214 kg g= 9.8 m/s2   OBJECTIVE= acceleration (m/s2) of the system

Q: Two masses m₁ = 14 kg and m₂ = 15 kg are connected by a light inextensible string passing over a…

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Q: Three blocks move on a frictionless surface with a 56 N force acting on the 12 kg block as shown.…

A: (a) Consider 12 kg block and apply Newton's second law. 56-T=12a      ...... (1)   Consider 3 kg…

Q: A man of mass m stands on a crate of mass M. He pulls on a light rope passing over a smooth light…

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Q: Ball #1 (mass m) rolls off a table of height h and ball #2 (mass 3 m) rolls off a table of height 3…

A: The horizontal distance covered by the ball 1 is, Distance = Horizontal velocity × time Time = t s=…

Q: A diver of mass 75.6 kg stands on one end of a diving board of mass 39.1 kg, as shown in the…

A:

Q: answer the following questions briefly.. choose only 1 . 02. Explain this statement" A body will…

A: "A body will tend to remain at rest or in motion along a straight path unless acted upon by an…

Q: A diver of mass 68.8 kg stands on one end of a diving board of mass 33.6 kg, as shown in the…

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Q: In the figure, two long barges are moving in the same direction in still water, one with a speed of…

A:

Q: An object of mass m1 = 3.50 kg placed on a frictionless, horizontal table is connected to a string…

A: Given values: m1 = 3.50 kgm2 = 6.60 kg

Q: The figure shows a container of mass m1 = 4.4 kg connected to a block of mass m2 by a cord looped…

A: Solution: (a) Apply Newton's second law to the container. T-m1g=m1a Here, T is the tension in the…

Q: The figure below shows two boxes connected to each other by a light cord that passes over a pulley…

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Q: In the system shown in the figure, the ground is frictionless, the blocks have mass m and 2m, and…

A: According to Newton's second law Fnet=maWhere Fnet is the net force, m is the total mass of the…

Q: Two blocks, which can be modeled as point masses are connected by a massless string which passes…

A: When we toss a ball on the ground, it begins to move with some velocity. However, no force should be…

Q: The figure shows two blocks connected by a cord (of negligible mass) that passes over a frictionless…

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Q: Objects of masses  m1 = 4.00 kg  and  m2 = 9.00 kg  are connected by a light string that passes…

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Q: Two blocks of masses 20 kg and 8.0 kg are connected together by a light string and rest on a…

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Q: two kids are playing on a sheet of ice (no friction) sam pushes karen (24.7 kg) to the right with a…

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Q: As shown in the figure below, two objects are moving towards each other with velocities given by the…

A: The velocities V2 and V3 in vector form will be: And, Assume that the magnitude of the velocity V1…

Q: In the Atwood machine diagrammed below, the block with the greater mass accelerates downward, while…

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Q: Which of the following best explains the greater difficulty in stopping a 1000-kg car moving at 174…

A: mass of first car (m) = 1000 kg Mass of second car (M) = 1000 kg Initial speed of first car (u) =…

Q: A block of mass 1.0 kg sits on top of one of mass 2.0 kg as pictured. The blocks have a coefficient…

A: To determine,the acceleration(a) of the 2 kg block and the tension(T) in the string.given,mass of…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!