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- University physics volume 1
- Unit 1. mechanics
- Newton's laws of motion
- Drawing free-body diagrams
Two forces of 25 and 45 N act on an object. Their directions differ by
. The resulting acceleration has magnitude of
What is the mass of the body?
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A force of 1600 N acts parallel to a ramp to push a 300-kg piano into a moving van. The ramp is inclined at
. (a) What is the acceleration of the piano up the ramp? (b) What is the velocity of the piano when it reaches the top if the ramp is 4.0 m long and the piano starts from rest?
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Draw a free-body diagram of a diver who has entered the water, moved downward, and is acted on by an upward force due to the water which balances the weight (that is, the diver is suspended).
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For a swimmer who has just jumped off a diving board, assume air resistance is negligible. The swimmer has a mass of 80.0 kg and jumps off a board 10.0 m above the water. Three seconds after entering the water, her downward motion is stopped. What average upward force did the water exert on her?
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(a) Find an equation to determine the magnitude of the net force required to stop a car of mass
m , given that the initial speed of the car is
and the stopping distance is
x . (b) Find the magnitude of the net force if the mass of the car is 1050 kg, the initial speed is 40.0 km/h, and the stopping distance is 25.0 m.
a.
; b. 2590 N
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A sailboat has a mass of
kg and is acted on by a force of
N toward the east, while the wind acts behind the sails with a force of
N in a direction
north of east. Find the magnitude and direction of the resulting acceleration.
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A body of mass 2.0 kg is moving along the
x -axis with a speed of 3.0 m/s at the instant represented below. (a) What is the acceleration of the body? (b) What is the body’s velocity 10.0 s later? (c) What is its displacement after 10.0 s?
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Force
has twice the magnitude of force
Find the direction in which the particle accelerates in this figure.
(We add
, because the angle is in quadrant IV.)
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Shown below is a body of mass 1.0 kg under the influence of the forces
,
, and
. If the body accelerates to the left at
, what are
and
?
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A force acts on a car of mass
m so that the speed
v of the car increases with position
x as
, where
k is constant and all quantities are in SI units. Find the force acting on the car as a function of position.
; First, take the derivative of the velocity function to obtain
. Then apply Newton’s second law
.
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A 7.0-N force parallel to an incline is applied to a 1.0-kg crate. The ramp is tilted at
and is frictionless. (a) What is the acceleration of the crate? (b) If all other conditions are the same but the ramp has a friction force of 1.9 N, what is the acceleration?
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Two boxes, A and B, are at rest. Box A is on level ground, while box B rests on an inclined plane tilted at angle
with the horizontal. (a) Write expressions for the normal force acting on each block. (b) Compare the two forces; that is, tell which one is larger or whether they are equal in magnitude. (c) If the angle of incline is
, which force is greater?
a. For box A,
and
; b.
because for
,
; c.
when
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Questions & Answers
I'm interested in biological psychology and cognitive psychology
what does preconceived mean
How can I develope my cognitive domain
why is communication effective
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
please i need answer
Wekolamo
because it helps many people around the world to understand how to interact with other people and understand them well, for example at work (job).
Agreed 👍 There are many parts of our brains and behaviors, we really need to get to know. Blessings for everyone and happy Sunday!
ARC
A child is a member of community not society elucidate ?
Isn't practices worldwide, be it psychology, be it science. isn't much just a false belief of control over something the mind cannot truly comprehend?
compare and contrast skinner's perspective on personality development on freud
Skinner skipped the whole unconscious phenomenon and rather emphasized on classical conditioning
war
explain how nature and nurture affect the development and later the productivity of an individual.
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
and having a good philosophy of the world is like a sandwich and a peanut butter 👍
Jonathan
generally amnesi how long yrs memory loss
interpersonal relationships
What would be the best educational aid(s) for gifted kids/savants?
treat them normal, if they want help then give them.
that will make everyone happy
Saurabh
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Source:
OpenStax, University physics volume 1. OpenStax CNX. Sep 19, 2016 Download for free at http://cnx.org/content/col12031/1.5
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