Manny Pacquiao's automobile is about to come closer to a barrier at a speed of 25 m/s along a level road. He locks the brakes at a distance of 40 m from the barrier. What minimum coefficient of kinetic friction is required to stop the automobile before it hits the barrier?   0.2   0.4   0.8   0.5

Q: A car drives onto a section of the road which is covered in ice. The driver attempts to stop by…

A: stopping distance(s)=60m initial speed(u)=40 km/h=40×1000 m3600 sec=11.1111 m/sec final speed(v)=0…

Q: An amusement park in Dubai has a ramp which is frictionless. A child drops a smooth object and it…

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Q: Traveling at a speed of 12.1 m/s, the driver of an automobile suddenly locks the wheels by slamming…

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Q: A 1500kg car is driving on the road at a speed of 15 m/s. The driver applies the brakes, bringing…

A: Given- Mass of car , m = 1500 kg Initial speed  of car, u = 15 m/s Final speed of car , v = 0 m/s…

Q: A hockey puck having initial speed of 3.8 m/s comes to rest after a distance of 7.6 m. What is the…

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Q: A 18-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 26 N.…

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Q: What is the magnitude of the average drag force ?drag exerted on the car?

A: work done by non conservative forces = change in total energy work done by drag force = total final…

Q: A 35.0-kg child swings in a swing supported by two chains, each 3.06 m long. The tension in each…

A: Given,  Mass of child = 35 Length of chains = 3.6 m Tension = 434 N (a) child's speed at lowest…

Q: The 42-kg crate is stationary when the force Pis applied. Determine the resulting acceleration of…

A: Given data: The mass of crate is m=42 kg. The angle of ramp is θ=17°. The coefficient of static and…

Q: 3. Multiple-object systems with friction: Two boxes are connected by a weightless cord running over…

A: Given       Mass of A MA=8.0kg      initially of rest     coefficient of kinetic…

Q: n object with a weight of 100 N is at rest on a horizontal surface. The static coefficient of…

A: Given:   The weight of the object is 100 N. The applied force is 65 N. The coefficient of static…

Q: A car is moving along a flat, straight road when its driver pushes so hard on the brakes that the…

A: To solve this problem, we can use the principle of conservation of energy, which states that the…

Q: slides? 1. 4.68 m/s^2 2 1.23 m/s^2 3 6.08 m/s^2 4 1.76 m/s^2

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Q: You are pushing a 42.0kg box horizontally along a flat horizontal surface at a constant speed of…

A: We use use the concept of Newton's second law of motion

Q: Traveling at a speed of 14.2 m/s, the driver of an automobile suddenly locks the wheels by slamming…

A: Given that: u=14.2 m/sv=?μ=0.59t=1.14 secg=9.8 m/s2

Q: The drawing shows a baggage carousel at an airport. Your suitcase has not slid all the way down the…

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Q: A skier starts from rest on the 45° slope at time t = 0 and is clocked at t = 2.70s as he passes a…

A: The net acceleration experienced along the direction of motion will be  a=gsinθ-μkgcosθ here, we…

Q: The 29 kg crate is subjected to a force having a constant direction and a magnitude 150 N. When s…

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Q: stone weighing 20.0 g is gently dropped into a pond, which then goes down experiencing a drag force…

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Q: 1. A 45.0 kg object is pushed up an incline as shown with a horizontal force of 300.0 N. The object…

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Q: A horizontal force of 18 N is applied to a 4 kg object standing on the horizontal surface. Since the…

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Q: Initially block A has a speed of 3 m/s as shown. Determine the speed of block B at t=6s. The…

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Q: A 35.0-kg child swings in a swing supported by two chains, each 2.98 m long. The tension in each…

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Q: *57. D In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of…

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Q: In the figure, two blocks are connected over a pulley. The mass of block A is 14.0 kg and the…

A: It is given that, mass of block A, mA=14 kgco-efficient of kinetic friction, μk=0.300incline angle,…

Q: A 40 N box is resting on a table when a 10 N force is applied to it horizontally. The coefficients…

A: Frictional force F = uN

Q: A truck is traveling at 12.3 m/s down a hill when the brakes on all four wheels lock. The hill makes…

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Q: A shopper pushes a 9.7 kg cart at constant of 1.20 m/s speed along a rough horizontal surface by…

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Q: A crate of milk chocolate is being moved up a 63° ramp as shown. The crate has a mass of 10 kg. The…

A: Given:θ=63°m=10kgF=1320 NN=1136 Nμk=0.180d = 1.9m

Q: John and Peter were pushing a 2000 kg car and it reached a speed of 3.0 m/s after starting from…

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Q: A waitress shoves a ketchup bottle with mass 0.45 kg to her right along a smooth, level lunch…

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Q: A box is projected upward onto a ramp that has a 15 degree incline. I know knows that it starts with…

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Q: A 2.00-kg block starts from rest at the top of a 30.0° incline and slides 2.00 m down the incline in…

A: Given data: Mass of the block, m=2.00 kg Distance travelled down the inclined plane, s=2.00 m Time…

Q: A shopper pushes a 6.4 kg cart at constant of 1.20 m/s speed along a rough horizontal surface by…

A: mass of cart = 6.4 kg constant speed = 1.20 m/s force applied = 21N θ = 38.3o below the horizontal…

Q: In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a…

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Q: A 68.5 kg person is standing inside an elevator. The elevator is going from the 1st floor to the 9th…

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Q: A car created 68.5 m long skid marks at a traffic wreck scene. A State Patrol investigator uses a…

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Q: A 95.5 kN car is traveling at 70.9 mph when the driver decides to exit the freeway by going up a…

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Q: A 40 kg block is attached to the wall with a wire and is resting on the 50 kg and 30 kg blocks on an…

A: To determin: THe smalles force P which will cause sliding

Q: A 9730-kg car is travelling at 28.7 m/s when the driver decides to exit the freeway by going up a…

A: The initial kinetic energy in this case is the sum of final kinetic energy, Potential energy and the…

Q: 1. Chevy and his saucer have a combined mass of 95.9kg. They are going down a slope that is 52m long…

A: Step 1: DiagramFirst, let's draw a free-body diagram for the forces acting on Chevy and his saucer…

Q: An airplane slows to a stop as it moves along the runway.  Its mass is 3.50 x 105 kg, its speed is…

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Q: A 13 g bullet pierces a sand bag 32 cm thick. If the initial velocity of the bullet was 68 m/s and…

A: Given data:  Mass (m) = 13 g = 0.013 kg Displacement (d) = 32 cm = 0.32 m Initial velocity (Vi) = 68…

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?”