Post a New Question

drift velocity

15,599 results

Physical Science
An 80.00 kg man playing hockey catches a puck moving at 20 m/s. The man is initially at rest. The man and puck move together after the collision. The puck's mass is 0.16 kg. What is the final velocity? A. 13.6 m/s B. 0.04 m/s C. 1.36 m/s D. 4.0 m/s

physics
A train at a constant 43.0 km/h moves east for 20.0 min, then in a direction 54.0° east of due north for 25.0 min, and then west for 30.0 min. What are the (a) magnitude and (b) angle (relative to east) of its average velocity during this trip?

phy
A record player takes 4.5 sec to spin up to 45 RPM. What is the angular displacement and angular velocity when t=3 sec. I was only able to find angular acceleration from the information given. Which is 1.05 rad/sec^2

physical science
An 85.0 kg man playing hockey catches a puck moving at 25.0 m/s. The man is initially at rest. The man and the puck move together after the collision. The puck's mass is 0.16 kg. What is the final velocity?

physical science
An 85.0 kg man playing hockey catches a puck moving at 25.0 m/s. The man is initially at rest. The man and the puck move together after the collision. The puck's mass is 0.16 kg. What is the final velocity? A. 4.00 m/s B. 1.00 m/s C. 13.6 m/s D. 0.05 m/s

Physics (please help!!!!)
A cart running on frictionless air tracks is propelled by a stream of water expelled by a gas-powered pressure washer stationed on the cart. There is a 1.00-m^3 water tank on the cart to provide the water for the pressure washer. The mass of the cart, including the operator ...

Physics (please help!!!!)
A cart running on frictionless air tracks is propelled by a stream of water expelled by a gas-powered pressure washer stationed on the cart. There is a 1.00-m^3 water tank on the cart to provide the water for the pressure washer. The mass of the cart, including the operator ...

physics
1.The speed of a train increased from 15 mi/hr to 25 mi/hr in a distance of 500 ft. Calculate the average acceleration in ft/s2. 2.An airplane taking off from a landing field has a run of 500 m. It starts from rest, moves with constant acceleration, and makes the run in 30 s. ...

Physics
Problem: A Super Ball is thrown to the ground with an initial downward velocity of 0.70 m/s and pops back up to the hand of the thrower; the total time elapsed is 0.71 s. What height was the Super Ball thrown from? Do I use the formula x = x0 + v0*t-0.5*g*t^2? x0=0 v0=-0.70 t=...

physics
You push a 45 kg wooden box across a wooden floor at a constant speed of 1.0 m/s. The coefficient of kinetic friction is 0.15. Now you double the force on the box. How long would it take for the velocity of the crate to double to 2.0 m/s?

physics
A bird of mass 0.8kg hovers upwards by beating the mass of effective area 0.5m^2. (i) what is its upthrust? (ii) estimate the velocity imparted to the air by beating of the wings assuming the density of air at STP to be 1.3kg/m^3.

Physics
Sandy is racing her sister home, but they each take a different route. Who will win: the one with the greatest average speed or the one with the greatest average velocity? Explain, using some sample numbers.

physics
a 2 liter bottle rocket has a thrust phase on .25 sec. The rocket goes straight up, reaches its apex, then plunges straight down. Total time is 8 sec. How do I calculate height, velocity and acceleration???

MATH VERY URGENT!!!!!!
1) A ball is hit at an angle of 36 degrees to the horizontal from 14 feet above the ground. If it hits the ground 26 feet away (in horizontal distance), what was the initial velocity? Assume there is no air resistance.

science
a car with a mass of 2000 kg moves along the ice with a constant velocity of 10.0 m/s. What is the car's momentum? a. 200.0 N b. 20.000 N c. 200.0 kg x m/s d. 20,000 kg x m/s I know it is twenty thousand, I'm unsure of the measurements or units. Please explain.

Physics
At 1:00 p.m. a car, traveling at a constant velocity of 96 km/h toward the west, is 24 km to the west of our school. How far from the school will it be at 3:30 p.m.? Answer in units of km. I've been attempting this problem for at least 30 minutes and not getting the right ...

Calculus
A particle travels along the x-axis so that its velocity is given by v(t)=cos3x for 0<(or equal to)t<(or equal to)5. When t=0, the particle is at x=5. a. What is the smallest x-coordinate of the particle? b. What is the total distance traveled? c. At what t is the ...

Physics
Lai threw a ball downwards with an initial velocity of 11.0 m/s. What is in meters the displacement of the ball during the 2.9 seconds after she threw it? (don't include units in the answer, use 10.0 m/s2 for g and use the upward direction as positive)

Physics
Please show steps and thank you! An astronaut of mass 70 kg carries an empty oxygen tank of mass 14 kg. He throws the tank away from himself with a speed of 3 m/s. With what velocity does the astronaut start to move through space?

PHYSICS
An artillery shell is fired with an initial velocity of 300m/s at 55 degrees above horizontal. To clear an avalanche, it explodes on a mountainside 42.0s after firing. What are the x and y coordinates of the shell where it explodes, relative to its firing point?

Physics
13. The graph at right shows the angular velocity as a function of time for the blade of a fan. The blade moves in a circular path. a. If θ = 0 rad at t = 0 s, what is the blade’s position at t = 1.5 s? b. At what time will the blade have completed 11 revolutions?

Physics
What is the moment of inertia of an object that rolls without slipping down a 2.00-m-high incline starting from rest, and has a final velocity of 6.00 m/s? Express the moment of inertia as a multiple of MR2, where M is the mass of the object and R is its radius.

physics
A 4.10 kg object on a horizontal frictionless surface is attached to a spring with spring constant 840 N/m. The object is displaced from equilibrium 50.0 cm horizontally (in the + direction) and given an initial velocity of 9.9 m/s back toward the equilibrium point at t=0 s

calculus
Suppose that a particle moves along a line so that its velocity v at time t is given by this piecewise function: v(t)=5t if 0≤t<1 v(t)=6((t)^(1/2))-(1/t) if 1≤t where t is in seconds and v is in centimeters per second (cm/s). Estimate the time(s) at which the ...

physics
If an object is initially moving with a constant velocity of 20m/s towards positive x-axis and after 5 sec it changes its direction and moving at an angle of 30o with x-axis, find magnitude and direction of its acceleration.

Physics
3.2 kg block is given an initial velocity of 12 m/s across horizontal surface. after travels 8 m speed is 2.4 m/s. determine coefficient of friction bewern block and surface and how far it travels before coming to rest

physics
A stone is thrown into water pond forming 10 waves in 5 seconds. The diameter of the first crest is 13 m and the diameter of the last crest is 4m. Find a.the periodic time b.the frequency c.the wave length d.the wave velocity

physics
Now how far the will the ball in the problem below will hit the ground? a. 10m b. 6.4m c. 9.6m d. 20m e. 140m a ball rolls off the table top 2m tall. with a velocity of 10m/s. with what speed will it strike the ground? V^2 = Vo^2 + 2g*h V^2=0^2+2*9.8*2 V^2=39.2^2 v=6.3m/s

Algebra 1
A ball is thrown into the air with the in initial upward velocity of 45 ft/s. It's height (h) in feet after t seconds is given by the function h=- -16t^2+45t+6. After about how many seconds will the ball hit the ground?

math
A particle moves on a line away from its initial position so that after t hours it is s = 6t2 + 2t miles from its initial position. Find the average velocity of the particle over the interval [1, 4]. Include units in your answer.

Trigonometry
two pulleys of a car engine radius of 8 cm and 5 cm respectively are connected by a belt. The larger pulley rotates 80 times per minute. Find the angular velocity of each pulley in radians per minute.

Physics
A 0.78 kg rock is whirled around in a flat circle at the end of a string of length 64 cm and a radial acceleration of 3.70 m/s^2 (a) What is the linear velocity of string? (b) what is the centripetal force acting on the rock? Vm= sqrt( grFs ) = sqrt( 9.8 m/s)(47.5m) (0.740) ?

Physics
A bullet of mass 3.9 g was fired at a stationary ball of lead. The head on impact moved the 10 kg ball at a velocity of .3703 m/s. If energy losses due to heat and internal energy are ignored. What was the speed of the bullet?

Physics
A girl standing on a bridge throws a stone vertically downward with an initial velocity of 15.0 m/s into the river below. If the stone hit's the water 2.00 seconds later what is the height of the bridge above the water?

Science
A girl standing on a bridge throws a stone vertically downward with an intial velocity of 15.0 m/s into the river below. If the stone hit's the water 2.00 seconds later what is the height of the bridge above the water?

Maths
At 3 pm ship A is 20 nautical miles south west of ship B. Assuming that the y- direction is north and the x-direction is east, the velocities of ships A and B can be expressed in knots in vector form as Va=(12,+5) Vb=(-8,-9) (i) Find the velocity of ship B relative to ship A

science
a bullet is fired with velocity 55m/sec at a target.if if the sound of collision heard after 7second.find the distance between target and gun.(speed of sound in air=330m/sec

physic
A tennis ball is projected horizontally from the top of a cliff 50m high with a velocity of 10ms -1 , find (a) the time taken to reach the ground (b) the distance from the foot of the cliff to where the ball hits the ground.

physics sir damon help
a uniform disk of moment of inertia 75kgm^2 and radius of gyration 3m rotates with an angular velocity of 2rad/s. determine d : mass , radius , angular momentum . . and . . kinetic energy of d disk . . . .

Physics
A bullet fired in a horizontal direction with muzzle velocity 300m/s. In the absence of air resistance, a) how far will it have dropped in travelling a distance of 20m. b) how far will it have dropped in one second

Math
A water rocket was launched from the ground, with an initial velocity of 32m/s. The rocket achieved a height of 44 m after 2 s of flight. The rocket was in the air for 6 s. Determine the quadratic functionthat models the height of the rocket over time.

Physics
After today’s test, you are going to meet some friends at Disney World. The total distance to Disney World is 68 miles. If you make it there in 72 minutes, what is your average velocity in miles per hour?

calculus review please help!!
The velocity of a particle moving along the x-axis is v(t) = t^2 + 2t + 1, with t measured in minutes and v(t) measured in feet per minute. To the nearest foot find the total distance traveled by the particle from t = 0 to t = 2 minutes.

Grade 12 Trigonometry
A wheel of a child's car revolves at 15 rpm. a) What is the angular velocity of the wheel in radians per seconds? b) A painted dot on the circumference of the wheel is 12 cm from the center of rotation of the wheel. How far does the dot travel in 5s?

Math - Physics
A typhoon moving 165 km/h 300 south of west is caused by two other forces acting in different directions. Find the components of the typhoon’s velocity that is due to the two forces.

Calculus
Solve: The posistion of a particle moving along a coordinate line is s=sqrt(5+4t), with s in meters and t in seconds. Find the particle's velocity at t=1 sec. A) 2/3 m/sec B) 4/3 m/sec C) -1/3 m/sec D) 1/6 m/sec Thank you!

physics
Consider a rock that is thrown off a bridge of height 27 m at an angle θ = 24° with respect to the horizontal as shown in the figure above. If the initial speed the rock is thrown is 12 m/s, find the following quantities: (a) The time it takes the rock to reach its ...

physics help
a particle moves uniformly around the circumference of a circle whose radius is 8 cm with a period of pi/20 s. the angular velocity w of the particle is a. 2.5 rad/s b. 3.2 X 10^2 rad/s c. 40 rad/s d. 7.9 rad/s e. 96 rad/s please explain thanks!

Physics
A 26.0 g object moving to the right at 17.0 cm/s overtakes and collides elastically with a 10.0 g object moving in the same direction at 15.0 cm/s. Find the velocity of each object after the collision. a) 26.0 g object b) 10.0 g object

Physics- Algebra based
A diver springs upward from a board that is three meters above the water. At the instant she contacts the water her speed is 9.10 m/s and her body makes an angle of 80.0° with respect to the horizontal surface of the water. Determine her initial velocity, both magnitude and ...

physics
A 1500 m race is divided into 3 equal, 500 m, sections. In the first section, a racer accelerates from rest at 3.0 m/s^2. In section 2, his velocity reduces steadily to 70 m/s and in section 3, he constantly slows until he stops on the finish line. How long did the entire trip...

chem
Among the elementary subatomic particles of physics is the muon, which decays within a few nanoseconds after formation. The muon has a rest mass 1.126 109 times that of a proton. Calculate the de Broglie wavelength associated with a muon traveling at a velocity of 3.35 104 cm/s.

calculus
a woman throws a ball vertically upwards so that 4seconds elapse before it strikes the ground. Determine the maximum height of the ball and the velocity with which the ball was thrown. Assume that the acceleration due to gravity is 10m/s squared and neglect the effect of air ...

physics
an electric motor represented by the 4 ohm resistor below accelerates a 20g car for 40 sec. it then collides with a perfectly inelastic collision with another car that has a mass of 10g and is traveling half the first car but in the opposite direction. what is the new velocity...

Science
A cat is walking down a sidewalk and spots a dog in a nearby yard. The cat strats to run in the opposite direction and then quickly climbs a tree. Which of the the following changes most accurately describes the movement of the cat? speed distance velocity****** motion

physics
A man named Harold is standing in a train car that has no windows. Since there aren't any windows, he doesn't know how fast or in what direction the train is moving or whether it is accelerating or decelerating. Harold decides that he might be able to figure something out by ...

physics
for example of the stone dropped from a ballon and striking the ground and taking into account air resistance sketch a) a distance-time graph b) a velocity-time graph c)an acceleration-time graph

physics
A person pushes a block up a frictionless incline at a constant velocity. The incline is 35o, and the mass of the block is 28 kg. If he only exerts a horizontal force, how much work does he do if the block travels 7 m along the incline?

physics
a child bounces a superball on the sidewalk. The velocity change of the superball is from 23m/s downward to 14m/s upward. if the contact time with the sidewalk is 1/800s, what is the magnitude of the average force exerted on the superball by the sidewalk?

Physics
A pellet gun is fired straight downward from the edge of a cliff that is 15m above the ground. The pellet strikes the ground with a speed of 27 m/s. How long does it take for the pellet to reach the ground with an initial velocity of 5.9 m/s.

physics
A 75.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 4.30 m. What is the work done on the man by (a) the gravitational force and (b) the escalator?

Physics
A 58.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 3.70 m. What is the work done on the man by (a) the gravitational force and (b) the escalator?

physics
A 58.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 3.70 m. What is the work done on the man by (a) the gravitational force and (b) the escalator?

physics
The linear momentum of a body can be calculated by multiplying its mass by the Question 1 options: time during which the mass moves. distance the mass moves. acceleration of the mass. velocity of the mass. Save

physics
The linear momentum of a body can be calculated by multiplying its mass by the Question 1 options: time during which the mass moves. distance the mass moves. acceleration of the mass. velocity of the mass. Save

PHYSICS!!!
how can i plot a v-t graph for this data and also account for the results and sources of error:if a ball starts from rest, and rolls down a .56m trackway, its final velocity is 1.10m/s, and the acceleration is 1.08m/s^2? HELP!!!!!!!im lost in it!!!!! The initial v was zero. ...

physics
One of the fastest recorded pitches in major-league baseball, thrown by Billy Wagner in 2003, was clocked at 101.0 mi/h. If a pitch were thrown horizontally with this velocity, how far would the ball fall vertically by the time it reached home plate, 60.5 ft away? ___ft

maths
two ships are steaming in opposite directions at 30 and 40km/h respectively, and when they are directly abeam a shot is fired from one. if the gun at rest gives a muzzle velocity of 800m/s. find the direction in which it must be fired to hit the other ship. gravity being ...

maths
the rate of the fall of an object can be determined by the formula h=1/2gt^2 where h is the height, g is the acceleration due to gravity and t is time in seconds. If a gun is fired 5 feet above the ground and level to the ground, how far would the bullet travel if its velocity...

Physics
Your teenage kid finally gets his drivers license. He takes off in your brand new car that weighs 2000kg at 47m/s when he hits a parked semi that weighs 40000kg. They plow forward in a perfectly in elastic fashion in the same direction. What is the velocity of the wreck?

Physics
Your teenage kid finally gets his drivers license. He takes off in your brand new car that weighs 2000kg at 47m/s when he hits a parked semi that weighs 40000kg. They plow forward in a perfectly in elastic fashion in the same direction. What is the velocity of the wreck?

physics
Given that an iron ball falls in glycerine contained in a jar where the viscous force F depends on terminal velocity V radius R of the ball and the coefficient of viscosity obtain and name the mathematical expression suitable for the relationship btw the parameter if the ...

Physics
A square loop,circular loop prepared from a straight wire of length L are moved out of a uniform magnetic field,acting normal to the plane of the paper at a constant velocity v.Draw the variation of induced emf with time for both the loops. How will the graphs look

Physics
A marble is flicked straight up. It takes 2.3 seconds to reach its maximum height. How long does it take it to return to its original height. Assume there is no air resistance totally lost. if i had velocity, or some other variable i would know what to do. all i know is travel...

Physics - Help!
An incident light is monochromatic and of wavelenght 600nm, the kinetic energy of the electron is 2.56 x 10^(-20)J. For light of wavelenght 400nm, it is 1.92 x 10^(-19)J. Use the above information to estimate the value of Planck's constant,h and the work function,W of the ...

Physics
Starting from rest Maria pulls horizontally on her new wagon for 1.1 seconds. She exerts a constant force of 89N against a frictional force of 43N. The wagon's final velocity is 3.2m/s. If she is on a level ground, how much does the wagon weigh?

Pys. Science
Help......A 1.0kg metal head of a geology hammer stikes a solid rock withy a velocity of 5.0m/s. Assuming all the energy is retained by the hammer head, how much will its temperature increase? (C head= 0.11kcal/kgCdegrees) I don't comprehend any of this!

physics
2. a body of mass 20kg is released from rest t the top of a rough slope which is inclined at 30 degrees to the horizontal.six seconds later the body has a velocity of 21 m.s down the slope. find the resistance to motion in newtons experienced by the body?

physics
a body thrown vertically upward returns to the earth in 3sec what was the initial velocity of the body? what height did the body reach? neglect the resistance of air. The answer after solving is 14.7m/s and 11m. please tell me how the answer is arrived.

Physics
A record of travel along a straight path is as follows: (a) Start from rest with constant acceleration of 3.51 m/s2 for 17.8 s; (b) Constant velocity of 62.478 m/s for the next 0.946 min; (c) Constant negative acceleration of −10.9 m/s2 for 3.89 s. What was the total ...

physics
a person throws a ball upward into the air with an initial velocity of 15 m/s calculate a)how high it goes? b)how long the ball is in the air before it comes back ? c)how much time it takes for the ball to reach the maximum height?

physic
A projectile is fired from the origin (at y = 0s m) a shown in the figure. The initial velocity components are v 0x = 940 m/s and v 0y = 96 m/s. The projectile reaches maximum height at point P, then it falls and strikes the ground at point Q. In Fig. 3.1, the y-component of ...

Physics
A football player throws a ball with a horizontal distance of 31.0 m so that the other player catches it at the exact height it was initially thrown. If the ball rises and falls by 1.8 m in its trajectory, what is the initial velocity of the ball? Please give the speed and angle!

Physics
A soccer ball kicked on a level field has an initial vertical velocity component of 15 meters per second. Assuming the ball lands at the same height from which it was kicked, what is the total time the ball is in the air? [Neglect friction.]

Physics
potential energy well for a 2.0 kg particle (the function U(x) has the form bx2 and the vertical axis scale is set by us = 2.0 J). (a) If the particle passes through the equilibrium position with a velocity of 85 cm/s, will it be turned back before it reaches x = 15 cm? (b) If...

science
a man pushes a lawnmower of mass 50kg at a constant velocity over a horizontal lawn.he exerts a push of 200n on the handle a t angle of 60 to the horizontal..Dertemime the vertical componet of this force and determine the horizontal component of this force

physics
The velocity of a ball changes from ‹ 8, −5, 0 › m/s to ‹ 7.88, −5.28, 0 › m/s in 0.04 s, due to the gravitational attraction of the Earth and to air resistance. The mass of the ball is 140 grams. I calculated the acceleration and got <-3,-7,0> what ...

Physics
A record of travel along a straight path is as follows: (a) Start from rest with constant acceleration of 3.07 m/s2 for 16.5 s; (b) Constant velocity of 50.655 m/s for the next 0.767 min; (c) Constant negative acceleration of −9.49 m/s2 for 5.89 s. What was the total ...

Physics
A mass is being pulled forward at a constant velocity of 3 m/s with a force of 15 N. The weight of the mass is 9.0 N. What applied force must be exerted so that the mass will accelerate to 14 m/s in 4.0 seconds. *Another one I don't understand. I even tried converting the ...

physics
a baseball is batted with a speed of 120 ft/sec at an angle of 37 degrees with the ground. find how long the ball is in the air, how high the ball goes, how far from the plate it is caught, and the components of the velocity of the ball 4 sec after it is hit.

Calculus
A particle is moving with acceleration a(t) = 36 t + 2. its position at time t =0 is s(0) = 16 and its velocity at time t =0 is v(0) = 2. What is its position at time t = 7

math
A particle is moving with acceleration a(t) = 36 t + 2. its position at time t =0 is s(0) = 16 and its velocity at time t =0 is v(0) = 2. What is its position at time t = 7

Calculus
A particle is moving with acceleration a(t) = 30 t + 12. its position at time t =0 is s(0) = 11 and its velocity at time t =0 is v(0) = 16. What is its position at time t = 8?

Calculus
A particle is moving with acceleration a(t) = 30 t + 12. its position at time t =0 is s(0) = 11 and its velocity at time t =0 is v(0) = 16. What is its position at time t = 8?

Calculus
A particle is moving with acceleration a(t) = 24 t + 4. Its position at time t =0 is s(0) = 15 and its velocity at time t =0 is v(0) = 11. What is its position at time t = 9?

conceptual physics
The linear momentum of a body can be calculated by multiplying its mass by the Question 1 options: time during which the mass moves. distance the mass moves. acceleration of the mass. velocity of the mass. Save

physics
You jump from the end of a diving board that is 3 meters above the water. You spring upward from the end of the board with an initial velocity of 5 m/s. How long are you in the air? What is the speed as you hit the water? I need to know the steps in solving the problem. Thanks!

physics
a shooter putter releases the shot some distance above the level ground with a velocity of 12.0 m s 51.0 degrees above the horizontal the shot hits the ground 2.08 s later what is the x-component of the shots acceleration while in flight?

physics
5)A ball is thrown horizontally at 10.0 m/s from the top of a hill 50.0 m high. How far from the base of the hill would the ball hit the ground? 45.0 m 6)A missile launched at a velocity of 30.0 m/s at an angle of 30.0 to the normal. What is the maximum height the missile ...

physics
what is the value for k if a spring stretches 0.4m when submitted to a 1800N force? How much force is needed to keep a 23 kg box moving at a constant velocity across a warehouse floor if the coefficient of friction between the box and the floor is 0.88?

  1. Pages:
  2. <<Prev
  3. 89
  4. 90
  5. 91
  6. 92
  7. 93
  8. 94
  9. 95
  10. 96
  11. 97
  12. 98
  13. 99
  14. 100
  15. 101
  16. 102
  17. 103
  18. Next>>

Post a New Question