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    sgm1996's Avatar
    sgm1996 Posts: 19, Reputation: 1
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    #1

    Oct 24, 2012, 05:19 PM
    physics
    1) A rocket-driven sled running on a straight,
    level track has been used to study the physiological effects of large accelerations on astronauts. One such sled can attain a speed of
    419 m/s in 1.6 s starting from rest.
    What is the acceleration of the sled, assuming it is constant?
    Answer in units of m/s^2
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    #2

    Oct 24, 2012, 05:20 PM
    physics
    001 (part 1 of 3)
    A rocket-driven sled running on a straight,
    level track has been used to study the physiological effects of large accelerations on astronauts. One such sled can attain a speed of
    419 m/s in 1.6 s starting from rest.
    What is the acceleration of the sled, assuming it is constant?
    Answer in units of m/s^2

    002 (part 2 of 3)
    How many g s would you pull? That is, what
    factor times g is this?

    003 (part 3 of 3) 3.0 points
    How far does the sled travel in 1.6 s, starting
    from rest?
    Answer in units of m
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    sgm1996 Posts: 19, Reputation: 1
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    #3

    Oct 24, 2012, 05:22 PM
    physics
    5)A car is moving at a constant speed of 11 m/s
    when the driver presses down on the gas pedal
    and accelerates for 14 s with an acceleration
    of 1.1 m/s^2
    .
    What is the average speed of the car during
    the period?
    Answer in units of m/s
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    sgm1996 Posts: 19, Reputation: 1
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    #4

    Oct 24, 2012, 05:24 PM
    Physics
    6) A baseball goes from zero to 31 m/s in 0.189 s.
    What is its average acceleration?
    Answer in units of m/s2
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    sgm1996 Posts: 19, Reputation: 1
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    #5

    Oct 24, 2012, 05:25 PM
    Physics
    8) An automobile traveling along a straight road
    Increases its speed from 37 ft/s to 51 ft/s in
    180 ft.
    If the acceleration is constant, how much
    Time elapses while the auto moves the 180 ft?
    Answer in units of s
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    sgm1996 Posts: 19, Reputation: 1
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    #6

    Oct 24, 2012, 05:25 PM
    physics
    9) A car, moving along a straight stretch of highway, begins to accelerate at 0.0153 m/s^2
    It takes the car 29.2 s to cover 1 km.
    How fast was the car going when it first
    began to accelerate?
    Answer in units of m/s
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    sgm1996 Posts: 19, Reputation: 1
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    #7

    Oct 24, 2012, 05:26 PM
    physics
    10) An object moving on the x axis with a constant acceleration increases its x coordinate
    by 239 m in a time of 1.67 s and has a velocity
    of 20 m/s at the end of this time.
    Determine the acceleration of the object
    during this motion.
    Answer in units of m/s^2
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    #8

    Oct 24, 2012, 05:27 PM
    physics
    11)The barrel of a rifle has a length of 0.847 m. A
    bullet leaves the muzzle of a rifle with a speed
    of 569 m/s.
    What is the acceleration of the bullet while
    in the barrel? A bullet in a rifle barrel does
    not have constant acceleration, but constant
    acceleration is to be assumed for this problem.
    Answer in units of m/s^2
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    #9

    Oct 24, 2012, 05:28 PM
    physics
    12)A car traveling with a velocity of 24 m/s is
    accelerated uniformly at 1.8 m/s^2 for 6.3 s.
    What is its final velocity?
    Answer in units of m/s
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    #10

    Oct 24, 2012, 05:29 PM
    physics
    13) A train is moving parallel and adjacent to a
    highway with a constant speed of 27 m/s. Initially a car is 41 m behind the train, traveling
    in the same direction as the train at 39 m/s
    and accelerating at 4 m/s^2
    What is the speed of the car just as it passes
    the train?
    Answer in units of m/s
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    #11

    Oct 24, 2012, 05:30 PM
    physics
    014 (part 1 of 2)
    A speeder passes a parked police car at 25.9
    m/s. Instantaneously, the police car starts
    from rest with a uniform acceleration of 2.48
    m/s^2
    How much time pases before the speeder is
    overtaken by the police car?
    Answer in units of s
    015 (part 2 of 2)
    How far does the speeder get before being
    overtaken by the police car?
    Answer in units of m
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    #12

    Oct 24, 2012, 05:31 PM
    physics
    016 (part 1 of 2)
    Two particles moving along parallel paths in
    the same direction pass the same point at the
    same time. Particle A has an initial velocity
    of 8.7 m/s and an acceleration of 1.2 m/s^2
    Particle B has an initial velocity of 4.3 m/s
    and an acceleration of 7.7 m/s^2
    At what time will B pass A?
    Answer in units of s

    017 (part 2 of 2)
    At what position will the faster particle
    pass the slower?
    Answer in units of m
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    #13

    Oct 24, 2012, 05:32 PM
    physics
    018 (part 1 of 2)
    A small first-aid kit is dropped by a rock
    climber who is descending steadily at 2.1 m/s.
    After 4.1 s, what is the velocity of the
    first-aid kit? The acceleration of gravity is
    9.81 m/s^2
    Answer in units of m/s

    019 (part 2 of 2)
    How far is the kit below the climber after the
    4.1 s?
    Answer in units of m
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    #14

    Oct 24, 2012, 05:34 PM
    physics
    020 (part 1 of 2)
    On March 19, 1954, Colonel John P. Stapp,
    USAF, attained the world speed record in
    a rocket-propelled sled that moved down the
    track at 632 mi/h. He and the sled were safely
    brought to rest in 1.4 s.
    Determine the acceleration he experienced.
    Answer in units of ft/s^2
    021 (part 2 of 2)
    How far did he travel during this deceleration?
    Answer in units of ft
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    #15

    Oct 24, 2012, 05:36 PM
    physics
    024
    This time particle A starts from rest and accelerates to the right at 73.8 cm/s^2 Particle B starts 364 cm down the track and moves at
    a constant velocity of 40.3 cm/s to the left.
    When will they meet?
    Answer in units of s
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    Alty Posts: 28,317, Reputation: 5972
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    #16

    Oct 24, 2012, 05:37 PM
    Show your work and your answer and we'll review it.

    We don't do homework here. You have to do the work. We can review the work you've done, and advise you where to go from there, but we won't do the work.
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    J_9 Posts: 40,298, Reputation: 5646
    Expert
     
    #17

    Oct 24, 2012, 05:37 PM
    Thank you for taking the time to copy your homework to AMHD. However, site rules prohibit us from doing your homework for you.

    If you want us to help, that's fine. But you will need to show some initiative and at least try to find the answers on your own.

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