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New Member
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Oct 24, 2012, 05:19 PM
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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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New Member
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Oct 24, 2012, 05:20 PM
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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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New Member
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Oct 24, 2012, 05:22 PM
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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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New Member
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Oct 24, 2012, 05:24 PM
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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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New Member
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Oct 24, 2012, 05:25 PM
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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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New Member
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Oct 24, 2012, 05:25 PM
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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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New Member
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Oct 24, 2012, 05:26 PM
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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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New Member
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Oct 24, 2012, 05:27 PM
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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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New Member
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Oct 24, 2012, 05:28 PM
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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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New Member
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Oct 24, 2012, 05:29 PM
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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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New Member
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Oct 24, 2012, 05:30 PM
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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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New Member
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Oct 24, 2012, 05:31 PM
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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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New Member
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Oct 24, 2012, 05:32 PM
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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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New Member
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Oct 24, 2012, 05:34 PM
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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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New Member
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Oct 24, 2012, 05:36 PM
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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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Pets Expert
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Oct 24, 2012, 05:37 PM
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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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Expert
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Oct 24, 2012, 05:37 PM
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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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