If a constant force f is applied to the ramp so that it is accelerating. Aluminum: 2.75 g cm 3 (table value is 2% smaller) Copper: 9.36 g cm 3 (table value is 5% smaller) Brass: 8.91 g cm 3 Tin: 7.68 g cm 3 Iron: 7.88 g cm 3 (table value is 0. 0m/s, then slides along the horizontal surface a distance 10 m before coming to. (b) A cylinder = πR 2, A rectangular solid = lw 64. time required ≅ 50 years or more advise against accepting the offer 48. (a) 3.16 × 10 7 s/yr (b) 6.05 × 10 10 yr 32. force that opposes the motion of two systems that are in contact and are not moving relative to each other terminal velocity constant velocity achieved by a falling object, which occurs when the weight of the object is balanced by the upward drag force Key Equations Summary 6. (a) 1.609 km/h (b) 88.5 km/h (c) 16.1 km/h 30. What constant horizontal eastward force is needed to accelerate a golf ball ( mass0.4 kg) from rest to a horizontal eastward speed of 60 meter/sec in 0. (a) The motion starts with a westward velocity, but constant eastward. newtons, what is the magnitude of the crate’s acceleration answer choices 0.50 m/s 2 3.5 m/s 2 3.0 m/s 2 4.0 m/s 2 Question 8 120 seconds Q. keeping the stopper moving at a constant speed and/or in a horizontal circle. If the frictional force on the crate has a magnitude of 10. A 10.0 kg block on a smooth horizontal surface is acted upon by two forces: a horizontal force of 70 N acting to the left and a horizontal force of 30 N to the right. newtons is applied to a 20.-kilogram crate moving toward the east on a level floor. If the tension in one string is T1 60 N, find the tension T2 in the second string. If the frictional force on the crate has a magnitude of 10. (a) 3.39 × 10 5 ft 3 (b) 2.54 × 10 4 lb 22. Click hereto get an answer to your question As shown in the figure, a horizontal force of 70 N is applied on system of block of masses 4 kg, 2 kg and 1 kg placed on a frictionless horizontal surface. A constant eastward horizontal force of 70. The difference between the two forces is the work done on the block by the person, which can be calculated as the force of the block times the distance through which it moves, or 3 N × 2 m = 6 J.2. The force of the block on the person is also 3 N. In the example above, the force of the person pushing the block is 3 N. An external horizontal force is applied to the block and its. If a car is traveling eastward, can its acceleration be westward Explain. By Newton's third law, the force of the reaction is equal and opposite to the force of the action, so the point where the force is applied does work on the person applying the force. A block of mass m is placed on a rough horizontal surface whose coefficient of friction is M. A constant eastward horizontal force of 70 N is applied to a 12 kg crate 1 See answer aradanadeyemi152 is waiting for your help. Work is due to a force acting on a point that is stationary-that is, a point where the force is applied does not move. Work is a scalar quantity, meaning that it can be described by a single number-for example, if a force of 3 newtons acts through a distance of 2 meters, then the work done is 6 joules. For example, if a force of 10 newtons (N) acts through a distance of 2 meters (m), then doing 10 joules (J) of work on that object requires exerting a force of 10 N for 2 m. The "work" of a force F on an object that it pushes is defined as the product of the force and the distance through which it moves the object. m/s2 18.An object starts from rest and falls freely for 40. If the frictional force on the crate has a magnitude of 10 newtons, what is the magnitude of the crate's acceleration A) 0 m/s2 B) 1.3 m/s2 C) 5.0 m/s2 D) 10. newtons is applied to a 20.-kilogram crate moving toward the east on a level floor. A student pulls a 2-kg backpack across the ice (assume frictionless) by applying a force at a 30.0 degree angle to the horizontal. A constant eastward horizontal force of 70. In physics, work is the transfer of energy by a force acting through a distance. 17.A constant eastward horizontal force of 70 newtons is applied to a 20 -kilogram crate moving toward the east on a level floor. When the sum of all the forces acting on a block on an inclined plane is zero, the block A) must be at rest B) may be slowing down C) must be accelerating D) may be moving at constant speed 2.
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