The setter on the volleyball team recieves a bump and sets a ball starting from net height (2.30 m above the gym floor) straight up with a velocity of 7.27 m/s. How high off the gym floor will the ball be when it reaches the pinnacle? If the ball fell from the pinnacle straight down how fast would it be moving when it hit th
It's first and ten. let's call the line of scrimmage the origin. The coach calls a dive (a staright ahead running play.) The line does a great job and opens a huge hole for the running back. If the running back gets the hand-off 4.0 yards behind the line of scrimmage with an initial speed of 3.0 yards/sec and accelerates at
A space station is shaped like a giant wheel and has a radius of 100 metres and a moment of inertia of 5.00 x 10^8 kg m^2. A crew of 150 is living on the rim. Assume average mass for a crew member as 65 kg. The station's rotation causes the crew to experience an apparent free-fall acceleration of g. 100 of the crew members m
Basic Physics Problems (Force; Newton's Second Law; Horizontal Force; Net Force; Static Friction; Kinetic Friction)
I would like for you to show me all of your work/calculations and the correct answer to each problem. 15. A 5.0-kg block at rest on a frictionless surface is acted on by forces F1 = 5.5 N and F2 = 3.5 N. What additional horizontal force will keep the block at rest? 19. The engines of most rockets produce a constant thru
The maximum load that can safely be supported by a rope in an overhead hoist is 400N. What is the maximum acceleration that can safely be given to a 25 kg object being hoisted vertically upward?
The 100 kg block in the figure takes 5.50 s to reach the floor after being released from rest. What is the mass of the block on the left? Please see attachment for diagram.
F = MA F = Force (measured in Newton's) M = Mass (measured in Kilograms) A = Acceleration (measured in Meters per second per second) (m/s^2) What is the answer? 1. F= _________ where; M = 100Kg and A = 5 m/s^2 F = MxA F = ___________X ________ = ______________ 2. F= _________ where; M = 10Kg and A = 50 m/s
A ball is launched up a semicircular chute in such a way that at the top of the chute, just before it goes into free fall, the ball has a centripetal acceleration of magnitude 2g. How far from the bottom of the chute does the ball land? (Your answer for the distance the ball travels from the end of the chute should contain R
A projectile is fired from ground level at time t=0, at an angle [THETA] with respect to the horizontal. It has an initial speed V0. In this problem we are assuming that the ground is level ... **Please see attachment for proper citation of symbols and complete question.
A Saturn V rocket has a mass of 2.75 x 10^6 kg and exerts a force of 33 x 10^6 N on the gases it expels. Determine (a) the initial vertical acceleration of the rocket, (b) its velocity after 8 seconds, and (c) how long it takes to reach an altitude of 9500m. (Ignore the mass of gas expelled and assume g remains constant.)
Please give complete solutions step by step. Thanks again for helping me! 1. A box is touching the floor. The normal force of the floor on the box depends on... (see attachment for rest)
It's not a problem but I need a good explanation please because I really don't understand: I need someone to explain why when we have (for example) one block on another, why when we represent the friction force, its direction can sometimes become, in the same sense, not only direction but also acceleration? How is this possib
What was the average resisting force exerted on the bullet that penetrated a large wooden fence post?
A 0.0050-kg bullet traveling with a speed of 200 m/s penetrates a large wooden fence post to a depth of 0.030 m. What was the average resisting force exerted on the bullet?
1.) A horizontal force of 3.00 N is applied to a 1.00-kg radio, initially at rest on a table with a level surface. a.) Will the radio move if the coefficient of the friction is 0.45? b.) What is the coefficient of friction if it just begins to move? c.) What is its acceleration if the coefficient of the friction is only 0.0
Use the Free-body diagrams to answer the following: 1. You are driving along the highway, when the car in front of you makes a right-hand turn. What is the best free-body diagram of forces on the turning car, from your point of view behind the car? 2. The speed of the car in front of you is a constant 25m/s. The mass of th
4.) A 0.840 kg glider on a level air track is joined by strings to two hanging masses. The strings have negligible mass and pass over light, frictionless pulleys. a.) Find the acceleration of the masses and... b.) Find the tension in the strings when the air flow is turned off and the coefficient of friction between the glide
1) You are playing an air hockey game where a puck glides frictionless on a cushion of air on a flat level table. When the puck is gliding across the table at constant velocity, which statement is true? There are no forces acting on the puck There is a force on the puck that causes it to continue to move forward. The vecto
Please give detailed answers with solutions so I can learn the way I learn using examples. Thanks! There are 3 attachments.
Please give step by step answers. The four question that follow belong to the graph being described. The graph has velocit on the y axis in m/s and the x axis is time in seconds. The points given make the grph line. Points (0,20), (2,30), (4,40), (6,40), (8,0), and (10,-30). 1) What is the velocity of the object at t=2
Please give an answer and explanation with steps if needed. 1) A block of material has dimensions 3.8cm by 6.1 cm by 3.8cm. Its mass is 594g. What is the density? Answer in units of g/cm^3 2) An acceleration of 4.2 mi/h/s is equal to: Answer in units of m/s^2. 3) Grains of fine beach sand are assumed to be spheres
Car A is at rest (0 mi/hr), while car B is going 90m/hr with constant velocity. How fast will car A have to travel from rest in order to catch up to car B over a distance of 3 miles? How long will it take for car A to catch car B?
Why is it more practical to use mercury in a barometer than water?
A car of mass 1000kg moves with a speed of 50 m/s on a circular track of radius 100m. What is the magnitude of its angular momentum (in kg.m^2/s) relative to the center of the racetrack? ============================================== Answers: a) 5 x 10^2 b) 5 x 10^6 c) 2.5 x 10^6 d) 2.5 x 10^4 ############################
1. A ball that weights 5N falls on earth ...what is the net force that acts on the ball during the fall? Which is the force (including its direction) that the ball exercises on the land when it falls? 2. In the moon, the gravitational acceleration of the objects is around 1.67 meter/s2 How much does it weight in the moon an ob
1. If a cord is pulled upward, making an angle of 27º with respect to the horizon line, produces a force of 365N and can pull a box over the floor with a weight of 55.2 kg at a constant speed of 20.5 centimeters/sec - which is the magnitude of the friction force that opposes the movement of the box? 2. A boat pulls a water-ski
1. The position equation for the movement of a particle is given by when s is measured in feet and t is measured in seconds. Find the acceleration at two seconds. 2. Find the derivative: . 3. Find if . 4. The radius of a circle is increasing at the rate of 5 inches per minute. At what rate is the area increasing when
A rock falls from the top of a building, passing a window in a known time. Find the height of the building.
A rock is released at rest from the top of a building. A window of the building which measures d=3.5 m from top to bottom. Its bottom edge is distance h=36 m from the ground. The rock takes time T= .12 seconds to pass from the top to the bottom of the window. a. find the height of the building. b. find the time the rock takes
A uniform thin ring, mass M= 6 kg and radius R= .35 m, with a bar of mass m= 4.5 kg across its diameter, is mounted on frictionless bearings at its center. A cord wrapped on the surface of the ring suspends a weight W= 14.7 nt. See ATTACHMENT1 for a diagram showing parameters and stating physics required.
SHM vertically moving tray with loose cube on top. Given period, find amplitude max., and given amplitude, find minimum period.
A tray is moving with SHM along a vertical y axis. A small aluminum cube is placed on the tray. a. If the period is fixed at T= 1.5 sec, find the maximum amplitude Ym for which the cube remains in contact with the tray. b. If the amplitude is fixed at Ym= .15 m, find the minimum period T for which the cube remains in contact w
For a certain point executing SHM on an x axis with amplitude .40 m, the equation giving its location as a function of time is given by: (1) x = .4 m cos (6 t) a. At time t= .35 sec, find the location, the velocity and the acceleration of the moving point. b. Find the first time after t=0 that the moving point is located a