18. A 25 kg bear slides, from rest, 12 m down a lodgepole pine tree, moving with a speed of 5.6 m/s just before hitting the ground. (a) What change occurs in the gravitational potential energy of the bear Earth system during the slide? (b) What is the kinetic energy of the bear just before hitting the ground? (c) What is the average frictional force that acts on the sliding bear?

Q: "30 kg bear slides, from rest, 8 m down a Lodgepole Pine tree, moving with a speed of 5.6 m/s just…

A: Dear student The Gravitational Potential energy of a particle is given by :  U = mgh Where, m = mass…

Q: A 250 g cart rolls 1.80 meters down along an inclined track. The track makes an angle of 24o with…

A: a. Let the height be h and base be represented by s. h=1.8sin24o =0.732 m s= 1.8cos24o = 1.644 m…

Q: An 85.1-kg dad climbs to the second floor of his house. His gravitational potential energy increases…

A: Given data: Increase in PE of Dad = 1.95*103 J Mass of dad (M) = 85.1 kg ass of daughter (m) = 21.4…

Q: A child with a weight of 200 N swings on a playground swing attached to 2.20 m long chains. What is…

A:

Q: A 200 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 4.4 N/cm…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: 17. What is the spring constant of a spring that stores 25 J of elastic potential energy when…

A: The spring constant(k) of a spring that stores 25 J of Elastic potential energy(E) by 7.5 cm. given,…

Q: A 300 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 4.8 N/cm…

A: The work done by the force of gravity is  WG=mgh                                  .......(1) The…

Q: A slingshot consists of a light leather cup containing a stone. The cup is pulled back against two…

A: Given data: Force, F=15 N Stretch, x=-1.0 cm=-0.01 m Mass of stone, m=58 g=58×10-3kg x'=-0.21 m

Q: A 700-g block is dropped onto a relaxed vertical spring that has a spring constant k =200.0 N/m. The…

A: Given , Mass = 700 grams = 0.7 kg spring compression x = 46.6 cm = 0.466 m  spring constant k = 200…

Q: A child on a sled (m = 47.0 kg) slides down a long hill starting from a rest position at a point…

A:

Q: 1) Skate Park Problem: A 7.500-kg particle is launched to a ramp from point 1 with initial velocity…

A: Note : Since the question has multiple sub-parts and as per guidelines we can provide solutions to…

Q: A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: A 300 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 3.0 N/cm…

A:

Q: A 32 kg bear slides, from rest, 8.4 m down a lodgepole pine tree, moving with a speed of 4.3 m/s…

A: a) We know ∆P.E.=mg∆h=32×9.81×8.4i.e.∆P.E.=2636.93 J  b) K.E.=12mv2=12×32×4.32i.e.K.E.=295.84 J

Q: A rock falls from a vertical cliff that is 4.0 m tall and experiences no significant air resistance…

A: Given that,Height : h = 4 (m)Here we need to find the speed car :Now,As we know that,The speed at…

Q: "25 kg bear slides, from rest, 8 m down a Lodgepole Pine tree, moving with a speed of 5.6 m/s just…

A:

Q: Figure shows a 0.51-kg block sliding from A to B along a frictionless surface curved path. When the…

A: It is given that, m=0.51 kgKA=27 JhA=10 mhB=6 m

Q: The gravitational potential energy of a 0.120 kg bird in a tree is 6.60 J. What is the height of the…

A: The expression for the gravitational potential energy is written as, Here, m, g and h represent the…

Q: A 340 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 2.1 N/cm…

A:

Q: A skier of mass 70.0 kg is pulled up a slope by a motor-driven cable that is parallel to the ground.…

A: (a) How much time does it take to get up the slope. (b) What is her change in Gravitational…

Q: A 20 kg bear slides, from rest, 13 m down a lodgepole pine tree, moving with a speed of 3.1 m/s just…

A: Solution

Q: 7 Skate Park Diagram 4 15.00 m 69.00 m 5 2 3 10.00 m

A: Given a 7.500-kg particle is launched to a ramp from point 1 with initial velocity of 55.00 m/s. We…

Q: Answer the question using law of conservation of energy A 1.00 X 10^3 kg roller coaster starts from…

A: According to conservation of energy , the energy of an isolated system remains constant.…

Q: A 34 kg bear slides, from rest, 11 m down a lodgepole pine tree, moving with a speed of 4.5 m/s just…

A:

Q: A spring, with a spring constant k = 30,000 N/m, is compressed from a length of 15.0 cm to 10.0 cm,…

A:

Q: A 230 g block is dropped onto a relaxed vertical spring that has a spring constant of k-2.3 N/cm…

A:

Q: A 300 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 1.1 N/cm…

A:

Q: What is the change in gravitational potential energy for a 70 kg man walking up stairs from a height…

A:

Q: A 2.5 kg metal ball hangs at the end of a 3-meter cord. The metal ball is pulled until the rope…

A:

Q: .0° with respect to the vertical

A:

Q: A 250 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 2.5 N/cm…

A: Given:m=250 g=0.25 kgk=2.5 N/mx=17cm=0.17m

Q: A rope exerts a force F⃗ on a 20.0-kg crate. The crate starts from rest and accelerates upward at…

A:

Q: A furniture carrier pushes a 60 kg crate with a constant velocity v = 2.0 m/s on a rough inclined…

A: Given that,Mass of crate :m = 60 (kg)Speed : v = 2 (m/sec)Height : h = 1 (m)Length : l = 2…

Q: A factory worker pushes a 24.0 kg crate a distance of 8.0 m along a level floor at constant velocity…

A: Given data:  Mass (m) = 24.0 kg Displacement (d) = 8.0 m The velocity is constant  Coefficient of…

Q: 31 kg bear slides, from rest, 10 m down a lodgepole pine tree, moving with a speed of 3.0 m/s just…

A:

Q: At Schlitterbahn, a 75.0 kg person rides a 12.0 m high water slide. If dissipative forces do -6250 J…

A:

Q: II. The Work Energy Theorem 6. TP 54. A 5.0-kg box has an acceleration of 2.0 m/s2 when it is pulled…

A: Given, m=5.0kga=2.0m/s2μk=0.50d=10 cm

Q: Kepler’s laws of planetary motion can be derived from Newton’s laws of motion and Newton’s universal…

A: There is no external force is acting on the solar system, the total mechanical energy of the…