In a crash test, a car is driven into a solid wall at a speed of 35 mph. the car's acceleration as it crashes into the wall. What is the maximum force experienced by the 1530kg car?

Q: The drag coefficient of a Porsche 911 sports car is 0.32. When driving with a speed of 30 miles per…

A: Given:drag coefficient, C = 0.32when car is at 30 mph force due to air resistance is RAsked:Force…

Q: A 200 g hockey puck is launched up a metal ramp that is inclined at a 30° angle. The coefficients…

A: IN THE QUESTION IT IS GIVEN THAT , inclined angle= 30° mass= 200 g  μs = 0.40 andμk = 0.30  puck’s…

Q: A 20 kg box is pushed on a flat horizontal floor with a frictional force of 5 N. How far will the…

A: mass of box = 20 Kg Frictional force = 5 N acceleration = - friction/mass  = - 5 /20  = - 0.25 m/s2…

Q: Josh starts his sled at the top of a 3.0-m-high hill that has a constant slope of 25°. After…

A: Given, Josh starts his sled at the top = 3.0-m-high Constant slope = 25° Horizontal patch of snow =…

Q: The machine is dropped from a height of 6 m. The system parameters are m=60 kg, c=# N.s/m, and…

A: Initial height of system x(0)=6 m, mass m=60 kg, spring constant k=54000 N/m, damping parameter s=3…

Q: What is the magnitude of the force required to stretch a 10 cm-long spring, with a spring constant…

A: Given intial length of the string l= 10cm Spring constant of the spring k= 100N/m Length after…

Q: a 15kg object is pushed along a rough, flat surface with a constant velocity. If the coefficient of…

A: Given data: The mass of object is m=15 kg. Coefficient of friction is μ=0.35.

Q: Calculate the kinetic friction force(N). The ramps slope is 33°. The objects mass 0.40566kg. The…

A: Solution:  We need to find coefficient of kinetic friction which is ratio of force along ramp and…

Q: A wooden block experiences a frictional force, f, as it slides across a table. If a block of the…

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Q: A race car driver is told that her new tires will increase the frictional force between the tires…

A: Let the original velocity = u The final velocity = v The initial coefficient of friction = μkLet the…

Q: Two football players are pushing a 60 kg blocking sled across the field at a constant speed of 2.0…

A: Considering the motion in the y-direction, Substituting the values and solving gives

Q: In 1956, Frank Lloyd Wright proposed the construction of a mile-high building in Chicago. Suppose…

A: Given data: w=746 N Need to determine the change in weight.

Q: the kinetic friction force that a horizontal surface exerts on a 60 kg object is 50 N. If the…

A: From Newton’s second law of motion.

Q: 10) Starting from rest, a 97.0 kg firefighter slides down a fire pole. The average frictional force…

A: The given values are, m=97.0 kgFk=800 Nv=3.60 m/s

Q: Estimate the minimum force that Microraptor must exert to fly.A. 0.65 N B. 1.3 NC. 1.0 N D. 10 N

A: Microraptor is like four winged dinosaurs.

Q: The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes 0.64…

A: Given: The height of the 100 kg object from the ground is  m. The initial velocity of the system is…

Q: 2. After one month of taking a literature class, a first-year Bard student decides to dispose of all…

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Q: The force acting on a particle is as in the figure it is changing. X= 8.00 m from particle x = 0 m…

A: The area under the Force-displacement graph is equal to the work done by the force in displacing an…

Q: *26. ao Under the influence of its drive force, a snowmobile is moving at a constant velocity along…

A:

Q: Jack slides a hockey puck of mass 275 g slides along the ice with a speed of 8.2 m/s when it reaches…

A: Given, Coefficient of kinetic friction, μk = 0.21 speed of the puck, v = 8.2 ms mass of the hockey…

Q: If the cord will break when the tension in it exceeds 50 N , what is the maximum speed the ball can…

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Q: The kinetic friction force between a 64.0-kg object and a horizontal surface is 43.0 N. If the…

A:

Q: If a 6.0 x 10-3-N friction force opposes the transporter's motion, what must be the magnitude of Q…

A:

Q: What is the magnitude of the force required to stretch a spring that has a constant of 425 N / m and…

A: given ,    K1 = 425 n/m    K2 = 215 n/m

Q: When a family of four with a total mass of 200 kg steep into their 1200 kg car, the can springs…

A: Given: The mass of the steep is 200 kg. The compression in the spring is 3 cm. The mass of the car…

Q: A human body can withstand approximately 10g of acceleration in a collision before death is likely.…

A: Given: The initial speed of the car is 55 km/h. The stopping distance is 26 m. The final speed of…

Q: A 1480 kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 6.43 m…

A:

Q: A 45.6lbs ball with an initial velocity of 2.36 m/s is rolling on rough surface slope and continues…

A: By using the energy conservation theorem: 12mvi2=Ffd+mgd Substitute the values.…

Q: Q9. An object (4.0 kg) is moving on a frictionless surface at a constant velocity (4 m/s), how mi…

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Q: A 720.0 kg boulder is raised from a quarry 145 m deep by a long chain having a mass of 570.0 kg.…

A:

Q: An 800 kg boulder is raised from a quarry 183 m deep by a long, uniform chain having a mass of 560…

A: Given information: Here, mb and mc are the mass of the boulder and the chain respectively.

Q: Consider the Atwood machine shown in the figure, where m, = 2.00 kg and m, = 7.65 kg. The system…

A:

Q: A 12.0-kg body initially traveling at 8.00 m/s subsequently experiences a net, constant force that…

A: Given,mass of the object, m = 12.0 kginitial speed, u = 8.00 msfinal speed of the body, v = 18.0…

Q: A 55 kg ice skater is gliding along at 3.5 m/s. Five seconds later her speed has dropped to 2.9 m/s.…

A:

Q: A 10-meter boom with a mass of 30 kilograms is held by a steel cable 6 meters from its left end.…

A:

Q: A Stevedore wants to push a 50 kg crate up a 40 degree ramp. He can push with a maximum 300 N. What…

A:

Q: A 4.45 x 104N truck is travelling at 100 km/h. If the coefficient of friction between the tires and…

A: Speed of the car is v = 100 km/h = 27.78 m/s ∑Fx=max                  1∑Fy=0                       2…

Q: An animal with a mass of 25 kg starts to slide while standing on the top of a 10 m high pole as…

A: Given data: Mass of animal is, m=25 kg. Height of pole is, h=10 m. Speed at bottom of pole is, v=4…

Q: An object of mass m is being affected by the force F = kix, Wwhere k is a positive constant. The…

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Q: "Is a force that tends to restore the object to the equilibrium position, this is a definition to"…

A: The restoring force is a force which acts to bring a body to its equilibrium position. The restoring…

Q: The unit of the friction constant is А. Кg B. No Unit C. N/C D. C

A:

Q: A 75kg bicyclist (including the bicycle) is pedaling uphill with a speed increasing at a rate of…

A: Solution:-

Q: What is the magnitude of force required to stretch a 15 cm long spring, with a spring constant of…

A: initial length (L) = 15 cm final length (L') = 20 cm Spring constant (k) = 100 Nm

Q: A 2000kg truck starts at rest and reaches a speed of 15 m/s over a time period of 5s. What is the…

A: The equation of motion is, v=u+at15m/s=0+a5seca=3m/s2

Q: A bicyclist and his bicycle have a mass of 105 kg. What forces is necessary to bring him to rest…

A: Data given:Mass of the bicyclist, m = 105 kgInitial velocity, u =  25 m/sec.Final velocity, v = 0…

Q: A 5.0 kg mass starts from rest at the top of an inclined plane 0.95 m long and slides down to the…

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.