An 8000-N car is traveling at 12 m/s along a horizontal road. When the brakes are applied, the car skids (slides) to a stop in 4.0 s. Find the work done on the car.

Q: A 85-kg man pushes a crate 7.5 m up along a ramp that makes an angle of 17.5° with the horizontal.…

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Q: 62.0 kg skier starts from rest at the top of a ski slope 55.0 m high. (a) If the frictional forces…

A: mass of skier (m) = 62 kg height (h) = 55 m work done by frictional forces = -9800 J

Q: a) Calculate the work of the applied force (in J).   (b) Calculate the work of friction (in J).…

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Q: A force F = (4xi-3y2j)Nacts on a particle, the particle moves along the x-axis from x= 1 to x = 4m.…

A: Write the expression of the force vector on a particle.   F=4xi-3y2j   Write the expression of the…

Q: A one-dimensional variable force in the x-direction is given as F(x) = 2 x 3.15; where F is in…

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Q: The 50-kg crate is at rest when a force P of 400 N acts on it as shown. Using the work and energy…

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Q: A delivery person pulls a 20.8 kg box across the floor. The force exerted on the box is 95.6 N…

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Q: A single force acts on a 3.2 kg particle-like object in such a way that the position of the object…

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Q: A body of mass 2 kg is initially at rest on a horizontal frictionless plane. It is then pulled 4 m…

A: Given value--- mass = 2 kg. distance = 4 m. Force = 25 N. We have to find--- final speed?

Q: A 556-kg trailer is hitched to a truck. Find the work done by the truck on the trailer in each of…

A: Given data The mass of the trailer is: m =556 kg The road is inclined at an angle is: θ = 14.2° The…

Q: A 82.5-kg man pushes a crate 4.5 m up along a ramp that makes an angle of 19.5° with the horizontal.…

A: The objective of the question is to calculate the work done by the man to move the crate and himself…

Q: A single force acts on a 1.2 kg particle-like object in such a way that the position of the object…

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Q: A young woman on a skateboard is pulled by a rope attached toa bicycle. The velocity of the…

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Q: A mechanic pushes a 2.50x10²-kg car from rest to a speed of v, doing 3 500 J of work in the process.…

A: Given: The mass of the car is 2.5x102 kg. The initial speed of the car is 0 m/s. The work done is…

Q: A body of mass 8kg moves in a straight line on a horizontal frictionless surface. At one point in…

A: Given, Mass,m=8  kg Initial speed, u=4 m/s Final speed,v=5 m/s Distance traveled,d=3 m

Q: A box is pushed horizontally though a displacement of 4.4 metres by a force of 61 Newtons.…

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Q: A force (->f =->-6i+->2j-->5k) N acts on a particle that undergoes a displacement ->r=->-3+->4j m.…

A: a) The expression for find work done on the particle is W=F·r Substitute values in the above…

Q: An Alaskan dog sled racer pulls his 75.0 kg sled at an angle of 40.0 degrees to the ground. He…

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Q: A single force acts on a 1.4 kg particle-like object in such a way that the position of the object…

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Q: single force acts on a 3.2 kg particle-like object in such a way that the position of the object as…

A: Given: m=3.2 kgx(t) = 0.91t - 2.7t2+4.4t3t1 = 0 to t2=2.2s

Q: A sled is dragged 8.0 m long a horizontal path at a constang speed of 0.30 m/s by a rope that is…

A: The work done will be given by the product of the component of the tension in the direction of the…

Q: 3. A 500-kg elevator is descending with a speed of 4.0 m/s when the winch system that lowers it…

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Q: A crate with a mass of 155 kg, starting from rest, slides down a ramp making an angle of 32 degrees…

A: This can be done using the basic definition of work.

Q: A 3.00-kg block is set in motion up an incline with an initial speed of 8.00 m/s (figure). The block…

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Q: A 4.00 kg block is set into motion up a rough inclined plane with an initial speed of v, = 8.60 m/s.…

A: Given m=4.00kg, d=5.00m, θ=20.0⁰ vi=8.60m/s

Q: A truck of mass 900 kg starts with an initial velocity of 2.00 m/s and travels in a straight line…

A: Mass of the truck,

Q: A 980 kg car travels a distance of 6.00 m uphill along a road that makes an angle of 30.0∘ with the…

A: Mass of the car m = 980 kg.Distance is given as s = 6 m.Angle is given as Accelration of the car

Q: A crate is given a push across a horizontal surface. The crate has a mass m, the push gives it an…

A: Given mass of the crate = m Initial speed =  3.30 m/s Coefficient of kinetic friction = 0.115 We…

Q: Several children are on a sled pulled by a four-wheeler across a level snow-covered field. The sled…

A: Given:-  The speed of the sled is v = 9.35 m/s is constant  The tow rope [ parallel to the ground ]…

Q: You are moving into an apartment and take the elevator to the 6 floor. Suppose your weight is 640 N…

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Q: A little red wagon with mass 7.00 kg moves in a straight line on a frictionless horizontal surface.…

A: mass of wagon = 7 kg Initial velocity = 4 m/s distance moved = 3 m force = 10 N

Q: A mechanic pushes a 3.00 x 10° kg car from rest to a speed.of v, doing 4650 J of work in the…

A: (a) Work done is equal to change in kinetic energy W=12m∆v2   =12mv2               (object started…

Q: A body of mass 30 kg is at rest. A force of 5 N is applied on it. Calculate the work done in first…

A: Given that:-Mass, m=30 kgInitial velocity, v=0m/sForce, F=5NWe know…

Q: A cord is used to lower vertically a block of mass Ma distance d at a constant downward acceleration…

A: Given value--- mass = M  acceleration = g/4 . We have to find--- work done by the cord on block?

Q: Pat is pulling on a rope to drag his backpack to school across the ice. He pulls upwards and…

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Q: A 60.0 kg skier with an initial speed of 12.0 m/s coasts up a 2.50-m—high rise.  Find her final…

A: skier weight=60.0 kg speed of skier= 12.0 m/s height= 2.50 m coefficient of friction= 0.0800 angle…

Q: A block of mass M, which was initially stationary, is lowered downwards using a rope with an…

A: The free-body diagram for the problem is shown in the figure: Applying Newton's second law…