A force of 39 N accelerates a 3.0 kg block at 4.2 m/s7 along a horizontal surface. What is the friction force acting on the block?

Q: A car has a mass of 1500 kg. If the driver applies the brakes while on a gravel road, the maximum…

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Q: Two blocks are sliding down a 30◦ incline. The first block is 2 kg and has a kinetic friction…

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Q: Kevin works as a janitor, and he is pushing a fully-loaded recycling bin that weighs 557 N across…

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Q: b) A girl exerts a 36-N horizontal force as she pulls a 52-N sled across a cement sidewalk at…

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Q: A rope exerts a constant horizontal force of 280 N to pull a 50kg crate across the floor. the…

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Q: A child’s model boat, when placed in a creek, accelerates from rest at 1.4 m/s2. If the river is…

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Q: A horizontal force of 90.7 N is applied to a 56.5 kg crate on a rough, level surface. If the crate…

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Q: A 70.0 kg box is being pulled along a horizontal surface. The coefficient of kinetic friction…

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Q: An object accelerates 2.0 m/s2 when a force of 12.0 newtons is applied to it. What is the mass of…

A: Answer:-  (1)  Given  Acceleration (a) = 2.0 m/s2 Force (F) = 12.0 N  According to Newton's second…

Q: Three blocks of masses 10.0 kg, 5.0 kg and 3.0 kg are connected by two light strings that pass over…

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Q: A rocket is launched vertically from the Earth, and the thrust (pushing force) from the engines is…

A: Acceleration = Force /mass

Q: A box is at rest on a level floor. μ = 0.4 and μ = 0.3. You pull the box horizontally just hard…

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Q: A stockroom worker pushes a box with mass 16.8 kg on a horizontal surface with a constant speed of…

A: Answer             32.928 N

Q: A 10.0-kg box is at rest on a concrete floor. The coefficient of static friction between the box and…

A: mass, m = 10 kg static friction coefficient = 0.75  kinetic friction coefficient = 0.62  Force, F =…

Q: A student applies a constant force of 200 N directed 30 degrees above the horizontal and thereby…

A: Given Information:- Applied force is F=200 N Angle between the force and the horizontal θ=30° Weight…

Q: The 1.0 kg block in the figure is tied to the wall with a rope. It sits on top of the 2.0 kg block.…

A: Given Data : The mass of block 1 is given as m1 = 1Kg. The mass of block 2 is given as m2 = 2Kg. The…

Q: A 17 kg block rests on a 32 degree inclined frictionless surface and is attached by a light string…

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Q: A person weights 686 Newtons. On their way home they see an Ice patch .they run and slide across the…

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Q: A rope pulls on the lower block in the figure with a tension force of 20 N. The coefficient of…

A: The below diagram represents the free body diagram of mass 1Kg

Q: Mary applies a force of 78 N to push a box with an acceleration of 0.52 m/s2. When she increases the…

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Q: A 2-kg object slides on a horizontal surface with an initial velocity of 3m/s starting from the…

A: Mass, m = 2 kg Initial speed u = 3 m/s Coefficient of friction is μ=0.5 Deceleration of the object…

Q: • • At the local grocery store, you push a 14.5-kg shopping cart. You stop for a moment to add a bag…

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Q: A 2 kg block is pulled on by a rope with a tension force of 20 N. The coefficient of kinetic…

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Q: A boy pulls a sled of mass 5.0 kg with a rope that makes a 60 degree angle with respect to the…

A: Here, given quantities,mass = m = 5.0 kg applied force = F = 10.0 Nangle with horizontal =  theta =…

Q: Mary applies a force of 78 N to push a box with an acceleration of 0.49 m/s2. When she increases the…

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

Q: 5. A 33.0 kg box is being pulled by a person across a horizontal floor with a force F = 165 N that…

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Q: m A box rests on top of a flat bed truck. The box has a mass of m = 20 kg. The coefficient of static…

A: The acceleration of an object is defined as the time rate of change of its velocity, i.e.a=v-utwhere…

Q: 10. Refer to Figure. Block A has a mass of 3.00 kg, block B has a mass of 5.00 kg and block C has a…

A: Write the expression for sum of the forces for all the three blocks.

Q: A horizontal force of 92.7 N is applied to a 54.5 kg crate on a rough, level surface. If the crate…

A: The equation of motion along the horizontal direction is

Q: Mary applies a force of 73 N to push a box with an acceleration of 0.42 m/s2. When she increases the…

A: Using Force balance on box in horizontal direction Fx_net = F_app-Ff Fx_net =m*a(From newton's 2nd…

Q: 1280 kg car pulls a 350 kg trailer. the car exerts a horizontal force of 3.6 x 103 N against the…

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Q: A rocket is descending to the surface of Mars where g = 4 m/s ^ 2 . The rocket is initially 80 m…

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Q: Santa Claus tries to drag his bag of presents along a horizontal surface by a red rope that is…

A: Required  mass of beg.

Q: A force of 109 N is used to accelerate a block of ice with a weight of 614 N along a horizontal…

A: We need to calculate the acceleration of the block.

Q: You are at the grocery store pushing on a shopping cart. The mass of the cart including all the…

A: Given: Mass of the Cart= 22 kg            Coefficient of friction between floor and wheels is 0.22…

Q: A horizontal force of 5.0 N accelerates a 4.0-kg mass, from rest, at a rate of 0.50 m/s2 in the…

A: Applied force  Mass Acceleration

Q: Mary applies a force of 76 N to push a box with an acceleration of 0.40 m/s2. When she increases the…

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Q: 60-kg woman in an elevator is accelerating downward at a rate of 1.2 m/s2. What is the magnitude of…

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Q: A man is trying to move an object (m 14.0 kg) by pulling upward on the rope at an angle of 53° above…

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Q: Mary applies a force of 71 N to push a box with an acceleration of 0.48 m/s2. When she increases the…

A: Let the mass of the box = m Case 1) Applied force = 71 N Acceleration produced = 0.48 m/s2 Case 2)…

Q: A horizontal force of 734 N is needed to overcome the force of static friction between a level floor…

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”