Someone drops a 70 - g pebble off of a docked cruise ship, 50.0 m from the water line. A person on a dock 5.0 m from the water line holds out a net to catch the pebble. (a) How much work is done on the pebble by gravity during the drop? (b) What is the change in the gravitational potential energy during the drop? If the gravitational potential energy is zero at the water line, what is the gravitational potential energy (c) when the pebble is dropped? (d) When it reaches the net? What if the gravitational potential energy was 40.0 Joules at water level? (e) Find the answers to the same questions in (c) and (d).

Q: A truck is towing a broken-down car via a horizontal cable for 360 m along a road. If the tension on…

A: Tension is a pulling force acting at the ends of a string or cable. Work done is the energy imparted…

Q: In the figure, a horizontal force Fa of magnitude 22.0 N is applied to a 2.94 kg book as the book…

A: When a force is applied to a body then the body is in motion and it moves in the direction of…

Q: A worker slides a box of mass 10 kg at a constant velocity, along a flat surface. tHE WORKER IS…

A:

Q: A force of magnitude 25 N directed at an angle of 54° above the horizontal moves a 12-kg crate along…

A: Given data:  Force (F) = 25 N Angle (θ) = 54°  above the horizontal Displacement (d) = 15 m…

Q: a block slides down an incline. As it moves from point A to point B, which are 5.0 m apart, force…

A: The work done by the force acts on the block is The work done by the frictional force acting on the…

Q: To push a 25 kg crate up a 270 incline, a worker exerts a force of 120 N, parallel to the incline.…

A: Given The mass of the crate is 25 kg. The angle of inclination is 27.0 degrees. The force is 120 N.…

Q: A mass of 8 kg is traveling at a constant 10.8 m/s when a 39 N force, F, starts to act in the…

A:

Q: A constant force of magnitude 5 Newtons has the same direction as the positive z- axis. If the…

A: The magnitude of the force is F = 5 N. The force has same direction as z axis. The coordinates of…

Q: A person exerts a horizontal force of 500 N on a box, which also experiences a friction force of…

A: Given data: Force applied by person on the box = 500 N towards the right. Friction force on the box…

Q: How much work is required to move an object from x = 0 to x = 5 (measured in meters) in the presence…

A:

Q: a single frictionless roller-coaster car of mass m = 825 kg tops the first hill with speed v0 = 17.0…

A: a) Work done by the gravitational force on the car at point A is,

Q: In the figure, a frictionless roller coaster car of mass m = 708 kg tops the first hill with speed…

A:

Q: A mass of 8 kg is traveling at a constant 10.9 m/s when a 32 N force, F, starts to act in the…

A:

Q: A tennis ball of mass m = 0.097 kg is thrown straight up with an initial speed v0 = 14 m/s. Let the…

A: mass of ball (m) = 0.097 kg Initial upwards speed (vo) = 14 ms

Q: An 18.4 m brick rests at the top of a ramp that is l = 113 m long and is at an angle θ = 72.2° above…

A:

Q: A helicopter lifts a 74 kg astronaut 17 m vertically from the ocean by means of a cable. The…

A:

Q: A coin slides over a frictionless plane and across an xy coordinate system from the origin to a…

A:

Q: A block of mass 0.31 kg is released from rest at point A and slides down a curved slope to point B.…

A:

Q: A middle school kid is pushing a lawn mower with 60 N of force at an angle 31 degrees below the…

A: Here, applied force(F) = 60 N displacement(S) = 400 m The angle(θ) between the applied force and…

Q: Acontainer with a mass of 5 kg is lifted to a height of 8 m How much work is done by the…

A: Given, Mass, m=5 kg Height, h=8 m To Find: Work done by gravitational force and external force…

Q: A roller coaster cart of mass m = 241 kg starts stationary at point A, where h1 = 39.4 m and a while…

A: The potential energy of the car at A relative to the ground is given by, UA=mgh1

Q: A person is about to carry a 50 kg sack of rice on top of his head while walking for 20 meters…

A: Option B is correct  Work done on sack of rice is 0 joules.

Q: A middle school kid is pushing a lawn mower with 46 N of force at an angle 31 degrees below the…

A: Force = F = 46 N Displacement = S = 350 m The diagram is given below:

Q: A 2.4 kg object slides across a horizontal surface with an initial speed of 7.6 m/s. If the object…

A: SOlution: Given that m = 2.4 kg v = 7.6 m/s

Q: a single frictionless roller-coaster car of mass m 750 kg tops the first hill with speed vo = 17.0…

A:

Q: Initially at rest, a block with a mass of 6 kg above a frictionless surface is pulled to the right…

A:

Q: Erol carries an 8.0 -kg suitcase as she walks 45 m along a horizontal walkway to her room at a…

A:

Q: You push your physics book 1.50 m along a horizontal tabletop with a horizontal push of 2.40 N while…

A: Given data: Displacement in horizontal direction (d) = 1.50 m Horizontal push force (F) = 2.40 N…

Q: A force of 20.0 N acts on a 5.0 kg object through a parallel distance of 1.3 m. How much work is…

A: Given:- Force = 20 N mass of object =5 kg   parallel distanace=1.3 m  Find:- How much work is done…

Q: In the figure, a block slides down an incline. As it moves from point A to point B, which are 4.0 m…

A: The work done by the force acts on the block is,Substitute the values,

Q: A one-dimensional force has the form F(x) = A x2-Bx where A =1.8 N/m2 and B = 0.65 N/m. How much…

A: We have a one-dimensional force which is given by  F(x)=Ax2-Bx  where constants A=1.8 N/m2 and…

Q: A coin slides over a frictionless plane and across an xy coordinate system from the origin to a…

A: Given: The coordinates are x,y=3.7 m,4.78 m. The magnitude of force is F=2.08 N. The angle from the…

Q: A tennis ball of mass m = 0.075 kg is thrown straight up with an initial speed v0 = 11 m/s. Let the…

A: Given data The mass of the ball is given as m = 0.075 kg. The initial speed of the ball is v0 = 11…

Q: .How much work is required to move an object from x=2 to x=4 (measured in merters) in presence of…

A: Given:  F(x) = 4 / x2 from x = 2 m to x = 4 m

Q: Given: A tennis ball of mass m = 0.063 kg is thrown straight up with an initial speed v0 = 7 m/s.…

A:

Q: In the figure, a frictionless roller coaster car of mass m = 992 kg tops the first hill with speed…

A:

Q: A 2.2 kg object slides across a horizontal surface with an initial speed of 6.34 m/s. If the object…

A: Answer:  WFμ=-44.21 Joules Explaination: As the object comes to rest the kinetic energy is…

Q: On an essentially frictionless, horizontal ice rink, a skater moving at 4.3 m/s encounters a rough…

A:

Q: how much work does Ryan to dom to lift a 2.0 x 101 Kg bag of potatoes to his shoulder, 1.7 m above…

A: Given Mass of the bag m = 2.0 x 101 kg Height h = 1.7 m

Q: Compute for the gravitational potential energy of a 60.0 kg mountaineer who is 500 m above the…

A: Given data: Mass (m) = 60.0 kg Height (h) = 500 m Required: Gravitational potential energy

Q: a 500gram ball thrown vertical upward from the surface of Earth with the initial velocity 10 m/s.…

A:

Q: In the figure, a frictionless roller coaster car of mass m = 818 kg tops the first hill with speed v…

A: (a) Consider the initial point of the car as T, and the datum of the system be point T. The work…

Q: A coin slides over a frictionless plane and across an xy coordinate system from the origin to a…

A: Work done is,

Q: In the figure, a frictionless roller coaster car of mass m = 729 kg tops the first hill with speed…

A: Given, m=729 kg v0=24.0 m/s h=36.6 m a) gravitational force on the car=mg=729×9.8=7144.2 N At point…

Q: A tennis ball of mass m = 0.089 kg is thrown straight up with an initial speed v0 = 13 m/s. Let the…

A: (a) As only gravity is acting So Energy will be conserved12mv02 = mghh = v022g = (13)22 x 10

Q: A 1.5 m high person is holding a 20 kg trunk on his head and is standing at a roadways bus-terminal.…

A: Work Done is calculated by the formula :   W = Force x Displacement                    ......(1)

Q: A force of 100N stretches a spring one meter beyond its natural length. How much work does it take…

A: When a force is applied to a spring, then it will be stretched according to the amount of force…

Q: porter pulls a 10 kg luggage along a level road for 5 m by exerting a force of 20 N at an angle of…

A:

Q: In the figure, a frictionless roller coaster car of mass m = 729 kg tops the first hill with speed…

A: According to the guidelines, only the first three parts will be solved. Please submit other parts in…

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.