### Compressions of a Spring When a Box is Pushed Down a Hill Toward It

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A 160 kg hockey puck is moving on a icy, frictionless, horizontal surface. at t=0 the puck is moving to the right at 3m/s 1) Calculate the velocity of the puck(magnitude and direction) after a force of 25N directed to the right has been applied for 0.050s 2)If instead, a force of 12N directed to the left is applied from t=0 t

A baseball has mass 0.145.kg 1) if the velocity of a pitched ball has magnitude 45m/s and the batted ball's velocity is 55m/s in the opposite direction, find the magnitude of the change in momentum of the ball and the impulse applied to it by the bat. b) If the ball remains in contact with the bat for 2.00ms, find the magnitu

An object is thrown horizontally from the top of a building at a height of 32.5 m above the ground, it hits the ground 65m from the base of the building. What is the initial speed? What is the velocity just before it hits the ground?

A block of mass m1 moving with speed v1 undergoes a completely inelastic collision with a stationary block of mass m2. The blocks then move, stuck together, at speed v2. After a short time, the two-block system collides inelastically with a third block, of mass m3, which is initially stationary. The three blocks then move, stu

See attached A. Find the highest point in the trajectory, . Express the highest point in terms of the magnitude of the acceleration due to gravity , the initial velocity , and the angle . B. What is the range of the projectile, ? Express the range in terms of , , and . Consider your advice to an artiller

The period of a stone swung in a horizontal circle on a 2.00-m radius is 1.00 s. a. What is its angular velocity in rad/s? b. What is its linear speed in m/s? c. What is its radial acceleration in m/s^2.

As seen from earth (rest frame S) two rockets A and B are approaching in opposite directions...See Attachment

A ballistic pendulum is a great device for measuring projectile speeds that are relatively large. You launch a small mass m into a large mass M, and it swings up a height h where the two masses stick together. Show that the velocity of the projectile (mass m) is given by v= (m+M)/m) times the square root of 2gh

For a car traveling at velocity v around a curve of radius r, there is a particular angle 0 (theta) that the curve ought be banked so that the car is least likely to slide sideways. Show that this special angle is given by O=tan-1[(VxV0/(rg)]

Please see attached study guide. Please give detailed step by step answers as simple as possible for my understanding please. 10 Multiple choice: Car's magnitude of change in velocity, average acceleration, circular path at constant speed, net force.

A circus acrobat of mass M leaps straight up with initial velocity v(initial) from a trampoline. As he rises up, he takes a trained monkey of mass m off a perch at a height "h" above the trampoline. What is the maximum height attained by the pair?

A block of mass m slides on a frictionless table. It is constrained to move inside a ring of radius l which is fixed to the table. at t=0, the block is moving along the inside of the table (i.e., in the tangential direction) with velocity (v)O (v initial) , the coefficient of friction between the block and the ring is "u" 1)

I would like you to show me all of your work/calculations and the correct answer to each problem. 13. A ball rolls at a constant velocity of 1.50 m / s at an angle of 45 degrees below the + x-axis in the fourth quadrant. If we take the ball to be at the origin at t = 0, what are its coordinates (x, y) 1.65 s later? Answers

Motion and Vectors. Please do problems 1-4 and 6-10 showing pictures if applicable, step by step solutions, and answers. See attached file for full problem description.

Please see the attached file for full problem description with diagrams. 1) A truck is stuck in the mud. One winch can pull on a cable with 2500 pounds of force and a second winch can pull with 1500 pounds of force. If the angle between the cables is 25 degrees, what is the result force on the truck? Show method used.

Please give step by step answers with solutions details please. I learn by seeing things done. Thank you! Their are 3 attachments.

Please see the attached file for full problem description. Please give step by step answers with solutions. I am learning so much by using your service just by seeing these done. Thanks!

Please give the solution and a step-by-step way to figure the answers out please. Learning is important. Use the data for all these questions on position versus time. The graph points are at 8 meters t=0 seconds. -4 meters at 1 second, -8 meters at 2 seconds, -4 meters at 3 seconds, 0 meters at 4 seconds and 28 meters at 5

Hi, please give the step by step solutions so I can see how you got the answers and understand it. The graph on the page is a velocity versus time graph. The time is in seconds. The graph has points at (0,20),(5,40),(10,60),(15,80),(15,60),(15,40),(15,20),(15,0),(15,-20),(15,-40),(20,-40), and then the next point is approxima

Please give step by step answers please. 1) The position versus time for a certain object moving along the x-axis is shown. The object's initial position is -3meters. The graph is position in meters for the y axis and the x axis is time in seonds. Point one on the grpah for 0 sec. is at (0,-3), 1 sec at (1,3), 2 sec (2

1) The position versus time for a certain object moving along the x axis is shown. The objects initial position is -3m. The graph points since I cannot draw it start at (0,-3),(2,9),(3,6),(4,4),(5,4),(6,0),(7,-4) and (9,0). a) Find the average velocity in the time interval 0s to 2s in m/s. b) Find the average velocit

Questions: 1) Two ants race across a table that is 72.5 cm long. One travels at 4.02 cm/s and the other at 2.7 cm/s. When the first one crosses the finish line, how far behind is the second one? Answer in units of cm. 2) The position of a car coasting down a hill was observed at various times and the results are summariz

At t=0, a wheel rotating about a fixed axis at a constant angular acceleration has an angular velocity of 2 rad/s. Two seconds later it has turned 5 complete revolutions. What is the angular acceleration of this wheel? ============================================== Answer: a) 17 rad/s^2 b) 14 rad/s^2 c) 20 rad/s^2 d) 23 ra

A loudspeaker is placed between 2 observers who are 120m apart, along the line connecting them. If one observer records a sound level of 60.0 dB and the other records a sound level of 90 dB, how far is the speaker from each observer? Hint: use the equation which relates to the difference between the decibel levels to the distanc

All work must be shown step by step, any answers given without proper justification will not be accepted. Keep track of units and use proper notation. An object is dropped from a tall building, If the air resistance is proportional to the square of the velocity, then (dv/dt)=-32(ft/sec^2)+kv^2 where k is a constant. Show th

A cello string .75m long has a 220-Hz fundamental frequency. Find the wave speed along the vibrating string. How can you produce a low- pitch by altering the length of the string, the thickness, and tension?

2 buses, 385 miles apart, are traveling directly toward each other on the same road. One is traveling 60 miles an hour and the the other is traveling 50 miles an hour. After how long will they meet?