You throw a 3.00 N rock vertically into the air from groundlevel. You observe that when it is 15.0 m above the ground, it is travelingat 25.0 m/s upward. Use the work–energy theorem to find (a) therock’s speed just as it left the ground and (b) its maximum height.

Q: On an essentially frictionless, horizontal ice rink, a skater moving at 6.0 m/sm/s encounters a…

A: Given initial speed= 6m/s Final speed = 2.88m/s Friction force = 0.22Mg = 2.2M Change in kinetic…

Q: A basketball player makes a jump shot. The 0.550-kg ball is released at a height of 1.90 m above the…

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Q: A crane lifts a 650-kg beam vertically upward 23.0 m and then swings it horizontally a distance of…

A: Given: The mass of the beam is 650 kg. The vertical displacement of the beam is 23 m. The horizontal…

Q: A worker pushes a m = 3.20 kg block a distance d = 2.00 m along the floor by a constant force of…

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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: A basketball player makes a jump shot. The 0.600-kg ball is released at a height of 2.01 m above the…

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Q: Find the work done by (a) the 2250N force and (b) friction

A: Mass of cart = m = 25 kg  F = 2250 N  Angle with horizontal = 60°  Distance= d = 7.5 m  Friction =…

Q: particle is subject to a force that varies with positio V as shown in Figure P7.9. Find the work…

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Q: 21. A 0.600-kg particle has a speed of 2.00 m/s at point A and V kinetic energy of 7.50 J at point .…

A: Solution:-(21) Part (a):- We know , kinetic energy k = (1/2)×m×v2 Then Ka= (1/2)×0.600×(2)2 […

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 3.0 kg block starts with a speed of 18 m/s at the bottom of a plane inclined at 39° to the…

A: Mass of block (m) = 3 kg Speed of block at the bottom of incline (v)= 18 msAngle of plane with the…

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: Fabiana exerts a constant downward force of 140 N140 N on her bicycle pedal with each downward…

A: Given: Downward force =140 N length of bike's pedal crank arm = 175 mm   To calculate : the work…

Q: A 1622 kg car has a speed of 11 m/s when it hits a tree. The tree doesn’t move and the car comes to…

A: The kinetic energy of the car before the collision is given as, The kinetic energy of the car after…

Q: A6 kg block is placed on a rough surface inclined relative to the horizontal as shown in Figure. The…

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Q: A box lies on a plane at an angle θ = 15° to the horizontal, with μs = 0.39 and μk = 0.35 between…

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Q: Four forces act on a crate of mass m = 1.0 kg, while it undergoes a displacement S, Calculate a) the…

A: Given Data : The weight of the block is given as w = 9.8 N. The magnitude of the force F on the…

Q: The 0.14 kg tree topper is accidentally knocked off of a Christmas tree giving it an initial speed…

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Q: Two men, Joel and Jerry, push against a car that has stalled, trying unsuccessfully to get it…

A: Workdone= Force x distance

Q: A batter hit a 0.145kg baseball straight upward with an initial speed of 25.0m/s. Use the…

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Q: A 4.0 kg block starts with a speed of 12 m/s at the bottom of a plane inclined at 35° to the…

A: mass of block, m= 4 kg initial speed, u = 12 m/s Coefficient of friction, μk= 0.32 θ= 35°

Q: A force ?⃗⃗acts in the x-direction, its magnitude given by ?=ax^3 where =2.0N/m^3. Find the work…

A: Equation of force Where

Q: As part of a mountain rescue team, you need to project a box of supplies up an incline of constant…

A: From the work energy theorem, it can be stated that the total work W done on the particle equals the…

Q: A basketball player makes a jump shot. The 0.600-kg ball is released at a height of 2. 14 m above…

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Q: A 1260-kg car starts from rest at the bottom of a driveway and has a speed of 3.00 m/s at a point…

A: given -          mass of car = 1260 kg          initial velocity of car = 0 m/s          velocity of…

Q: kateboarder with mass ms = 46 kg is standing at the top of a ram

A: Given: Mass of skateboarder is ms=46kg hy=3.3m At the top of a ramp, initial speed of skateboarded…

Q: Starting from rest, a 5.00-kg block slides 2.50 m down a rough 30.0 incline. The coeffi cient of…

A: Free body diagram

Q: You throw a 20-N rock vertically into the air from ground level. You observe that when it is 15.0 m…

A: Given Data Weight of the rock is W=20 N Height of the rock from the ground is h=15.0 m Speed of the…

Q: MY NOTES ASK A 7.80-g bullet moving at 510 m/s strikes the hand of a superhero, causing the hand to…

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Q: Mechanic Physics: A 1.30 kg snowball is fired from a cliff 12.6 m high. The snowball's initial…

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

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Q: You drag your 30 kg suitcase 1200 m thru the Chicago airport at essentially constant velocity 2.0…

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Q: A large cruise ship of mass 6.00 x 10 kg has a speed of 12.8 m/s at some instant. (a) What is the…

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Q: A force ~F=(6x5 N)i + (2y N)j acts between (x1,y1)= (2m, 3 m) to (x2; y2)=(3 m, 0 m).Calculate the…

A: Given :          F =( 6x⁵ i + 2y j .)N          x1= 2m  , x2 = 3m          y1= 3m   ,y2= 0m  We know…

Q: You throw a 24.0 NN rock into the air from ground level and observe that, when it is 14.0 mm high,…

A: weight = 24 N mg = 24m = 24/9.8 m = 2.45 kg H = 14 m V = 16 m/sA)Using work energy theorem…

Q: The tree topper is accidentally knocked off of a Christmas tree giving it an initial speed of 15…

A: In  this question, mass of the ornament is not given. Therefore, the speed of the ornament is…

Q: A 3.5 kg block starts with a speed of 16 m/s at the bottom of a plane inclined at 41° to the…

A: (a) suppose the block moves through a distance d. The net work done along the direction of the…

Q: A basketball player makes a jump shot. The 0.600-kg ball is released at a height of 2.02 m above the…

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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 factory worker pushes a 40 kg box a distance of 5 meter along a level floor, at constant speed, by…

A: Given Data: The mass of the box is, m = 40 kg. The displacement is, s = 5 m. The coefficient of…

Q: A hockey puck of mass 0.26 kg is sliding along a slippery frozen lake, with an initial speed of 64…

A: Mass of hockey puck, m = 0.26 kg Initial speed, u = 64 m/sCoefficient of friction between ice and…