214 Answered Questions for the topic Velocity

10/05/15

Help for the physics questions?
A baseball player throws a baseball with a horizontal velocity of 100m/s west. The ball hits the ground 0.5 seconds later.   1.) With what vertical velocity does the ball land?   2.) How tall... more
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10/05/15

Help for the physics questions?
A baseball player throws a baseball with a horizontal velocity of 100m/s west. The ball hits the ground 0.5 seconds later.   A) With what vertical velocity does the ball land?   B) How tall is... more
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Velocity Physics Meters Height

10/05/15

How far does the jumper move horizontally?
A long jumper achieves a height of 1.5 meters when her initial horizontal velocity is 5m/s. How far does the jumper move horizontally? (Hint: She reaches a height of 1.5 meters halfway through the... more
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09/29/15

velocity and altitude
A ball is tossed into the air at 40 feet per second from a height of 6 feet. How long will it take the ball to reach the ground?  The approximate time it took was _ seconds. Need albegra hw help.... more
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09/29/15

The displacement (in meters) of a particle moving in a straight line is given by the equation of motion s = 1/(t^2), where t is measured in seconds.
Find the velocity of the particle at t = a, t = 1, t = 2, and t = 3
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09/21/15

If a rock is thrown into the air on small planet with a velocity of 30 m/s, its height (in meters) after t seconds is given by y=30t-4.9t^2.
If a rock is thrown into the air on small planet with a velocity of 30 m/s, its height (in meters) after t seconds is given by y=30t-4.9t^2. Find the velocity of the rock when t=4. *You should... more
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Velocity Physics

09/15/15

What is the magnitude of a plane's displacement if in 21 s its velocity changes from 160 m/s to 85 m/s at a uniform rate of acceleration?
 i need help asap
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Velocity Geography Joules

09/15/15

Height/velocity
hail stones are falling from a height of 500 meters. each hailstone has a mass of 30 grams. how much kinetic energy, in joules, does one of these hail stones have when it hits the ground?  what... more
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Velocity Physics

09/11/15

Physics help?
A turtle and a hare race. The hare takes off at 4.5 m/s for 15 minutes and the turtle takes off at 0.45 m/s. The hare then slows down to 1.5 m/s for 10 mins. Then it falls asleep for 20 minutes. It... more
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09/10/15

Riding your bike, you can accelerate at a rate of 1.5m/s^2. If you accelerate for 17 seconds, how much speed will you gain?
Riding your bike, you can accelerate at a rate of 1.5m/s^2. If you accelerate for 17 seconds, how much speed will you gain?   (s) = seconds   SHOW WORK (Average Speed or Acceleration)
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09/10/15

Riding your bike, you can accelerate at a rate of 2m/s^2. If you start from rest, how long will it take to reach a speed of 20m/s?
Riding your bike, you can accelerate at a rate of 2m/s^2. If you start from rest, how long will it take to reach a speed of 20m/s?   Show work (Average Speed or Acceleration)
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Velocity Acceleration Speed

08/19/15

which describes motion in which the person or object is accelerating?
a. a bird flies straight from a tree to the ground without changing speeds b. a dog walks at a constant speed along a straight sidewalk c. a girl runs along a straight path the same distance each... more
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08/18/15

looking at a velocity time graph
when looking at a velocity vs. time graph, how can one determine the total distance traveled as well as the displacement?
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Velocity

08/12/15

distance S (in feet) traveled byvehiclestop to the time T in seconds s(t)=16t^{2} skid marks to determine the braking distance was about 650 feet.What is the
The following formula relates the distance S (in feet) traveled by a vehicle during an emergency stop to the time T (in seconds) it takes to arrive at a complete stop: s(t)=16t^{2}At the scene of... more
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08/09/15

A high-pressure water sprayer operates at 2 gal/min. If the diameter of the
A high-pressure water sprayer operates at 2 gal/min. If the diameter of the opening on the nozzle is 0.025 in, what is the velocity of the spray?   Answer in MPH
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Velocity Math

08/06/15

After how many seconds with the ball be 200 feet high?
The full question:   h = -16t2 - 80t + 1000   The equation above expresses the approximate height h, in feet, of an object t seconds after it is thrown vertically downward from a building 1000... more
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07/31/15

I really don't understand algebra or word problems...please help!
A water balloon is tossed into the air with an upward velocity of 25 ft/s. Its height h(t) in ft after t seconds is given by the function h(t) = − 16t^2 + 25t + 3. After how many seconds will the... more
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Velocity Math Science Physics

07/22/15

Physics: What are the following for this system: amplitude, frequency, period, spring constant, max velocity and total energy?
A 27.8 gram mass oscillates on the end of a spring and its motion can be described by: (1.5 )sin (21.4 t ) [here the units are standard, meters and seconds]   What are the following for this... more
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Velocity Math Science Physics

07/18/15

Physics: Multiple Choice: what happens to the wavelengths of the siren as measured by the observer while the police car approaches to when he goes away?
A police car is driving past an observer sitting by the side of the road, what happens to the wavelengths of the siren as measured by the observer while the police car approaches to when he goes... more
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Velocity Math Science Physics

07/18/15

Physics: How fast would the car need to be going to have the change in frequency be one octave (frequency halved) difference?
At very fast car races the sound of the engine as a car approaches is much different than when it passes you. How fast would the car need to be going to have the change in frequency be one octave... more
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Velocity Math Science Physics

07/18/15

Physics: What harmonic number are these two frequencies listed.
A pop bottle style instrument is played being open at one end closed at the other, if two successive frequencies, 350 Hz and 490 Hz, are produced, what is the fundamental frequency, and what... more
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Velocity Math Physics Energy

07/15/15

Physics: amplitude, frequency, period, spring constant, max velocity and total energy
A 27.8 gram mass oscillates on the end of a spring and its motion can be described by: (1.5 )sin (21.4 t ) [here the units are standard, meters and seconds] What are the following for this system:... more
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Velocity Math Science Physics

07/15/15

Physics: Frequency
At very fast car races the sound of the engine as a car approaches is much different than when it passes you.   How fast would the car need to be going to have the change in frequency be one... more
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07/08/15

if the radius of the gear is 2 feet and the radius of the cog is 8 inches, what is the angular velocity of the cog (in radians per second)?
this is a questions about a lighthouse.  the lighthouse is 175 feet tall, the beam of light shines up to 25 miles off the coast, and it rotates through one revolution per 15 seconds. it has a... more
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06/19/15

Physics: Bernoulli’s principle with pressure and velocity (multiple choice)
Driving slowly down a two-lane highway a large transport truck passes me going the same way as I am. As he does physics flashes before my eyes, and I think Bernoulli’s principle with pressure and... more
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