During your winter vacation, you enter a “dogsled” race across a frictionless frozen lake, in which the sleds are pulled by students instead of dogs. To get started, you pull the sled (mass m=50 kg) with a force of F=100 N at θ = 60o above the horizontal. The sled moves S = 30.0 m, starting from rest. Assume that there is no friction. (1) What is the final kinetic energy of your sled? (2) What is the final momentum p of your sled?

Q: Suppose a car travels 108 km at a speed of 35.0 m/s, and uses 1.80 gallons of gasoline. Only 30% of…

A: (a). The amount of work done to keep the car moving at constant speed can be calculated as follows,

Q: A 1100 kg car drives up a hill that is 15.2 mm high. During the drive, two nonconservative forces do…

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Q: An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and…

A: Mass of an asteroid = 5.5Initial speed of asteroid = 7000 m/sFinal speed of asteroid = 5500…

Q: The normal force from the pogo stick on your feet has magnitude Npy(y) = F1(1 −y/h) where F1 =…

A:

Q: A horizontal force of magnitude 49.0 N pushes a block of mass 4.37 kg across a floor where the…

A: The work done by the applied force is given by the formula:Here, is the applied force, is the…

Q: A 349 N force is pulling an 76.7-kg refrigerator across a horizontal surface. The force acts at an…

A: Given Data: Pulling force, F=349 N Refrigerator mass, M=76.7 kg Angle, θ=26.9° Kinetic friction…

Q: A 186-kg crate is being pushed across a horizontal floor by a force P that makes an angle of 43.6 °…

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Q: ck with a mass of 4 kg is sliding across a horizontal surface with an initial speed of 5 m/s.…

A:

Q: A hockey puck of mass 0.25 kg is sliding along a slippery lake with an initial speed of 60 m/s. the…

A: Given that Mass m = 0.25 kg Initial speed u = 60 m/s Coefficient of friction μ = 0.030 Final speed V…

Q: A cord is used to vertically lower an initially stationary block of mass M = 20 kg at a constant…

A: mass, m  = 20 kg  downward acceleration, a = g/4  distance, d = 1.5 m

Q: forces act, one of which is known to be constant in time:  F1 = (5 N)î + (7 N)ĵ.  As a result, the…

A: Work done by the force is given as  W = F.r r = displacement vector

Q: The figure below shows three forces applied to a trunk that moves leftward by 4.90 m over a…

A: Given: Force F1=5 N, F2=8 N, F3=3 N, θ=60°, Displacement d=4.90 m (leftward). Required: (a) Net work…

Q: A child on a sled is initially at rest on an icy horizontal surface. The sled is pushed until it…

A: First, we find the acceleration of the sled. Then we find the force needed to cause the acceleration…

Q: An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and…

A:

Q: force F = (4 î − 5 ĵ) N acts on a particle that undergoes a displacement Δr = (2 î + ĵ) m. Find the…

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Q: A 1.08E+2 kg crate is being pushed across a horizontal floor by a force P that makes an angle of…

A:

Q: A 2.1 kg block is acted upon by a variable horizontal force F(x) = 29.0−5.0x, where the force is…

A: If the net combined work of external force and friction force is zero then we have:…

Q: A 1400 kg car begins sliding down a 13.0 ° inclined road with a speed of 34.0 km/h.The engine is…

A:

Q: As shown in the attached image, a box of mass = 66.0 kg (initially at rest) is pushed a distance of…

A: (a) The work done by the force of friction is Substitute the values in equation (1) to find the…

Q: A 4.20-kg block is set into motion up an inclined plane with an initial speed of v; = 7.40 m/s (see…

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Q: Starting from rest, a 24.6 kg suitcase slides 4.81 m down a frictionless ramp inclined at 36.9° from…

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Q: A 240-kg roller coaster reaches the top of the steepest hill with a speed of 5.60 km/h. It then…

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Q: The engine of a Honda Civic has a power of 1.32 x 105 W (176.88 hp).   a) How much work does this…

A: Power is defined as the energy transferred per unit time. Since this energy is consumed in work…

Q: In the figure, a block of mass m = 3.90 kg slides head on into a spring of spring constant k = 320…

A: Given information: Here, m is the block’s mass, k is the spring’s constant, x is the compression,…

Q: An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and…

A: (given)       Mass of an asteroid = 4.5×104 kg Initial speed of asteroid = 7400 m/s  Final speed of…

Q: oblem 2. A 4.0 kg object moving with an initial velocity of 8.0 m/s on a horizontal surface comes to…

A: Given that                    The mass of the object is (m) = 4.0kg                    The initial…

Q: consider a 4.50 kg box sliding down a ramp. The boox starts from rest at a maximum height of 6.50…

A:

Q: Suppose a car travels 108 km at a speed of 20.0 m/s, and uses 1.80 gallons of gasoline. Only 30% of…

A: The work done by a force on moving a body by a distance is given by W = F.s, where F = the force…

Q: A box m = 85 kg is being pulled by a constant force F = 150 N at an angle of θ= 25 degrees. The…

A: Given data *The mass of the box is m = 85 kg *The angle is θ= 25 degrees *The block moves a distance…

Q: A 156-kg crate is being pushed across a horizontal floor by a force P that makes an angle of 29.1°…

A:

Q: An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and…

A: Given:        Mass of Asteroid is given as,                m= 4.7×104 kg      Initial speed of…

Q: A box of mass 12.0 kg begins at rest, and is accelerated at a rate of 1.5 m/s2 by a force F for 10.0…

A: The equation of motion is given by, v=u+at Here, v is the final speed, u is the initial speed, a is…

Q: In the figure, a block of mass m = 4.00 kg slides head on into a spring of spring constant k = 230…

A: