Physics, 09.11.2019 02:31 innocentman69
There are (one can say) three coequal theories of motion for a single particle: newton's second law, stating that the total force on an object causes its acceleration; the workākinetic energy theorem, stating that the total work on an object causes its change in kinetic energy; and the impulseāmomentum theorem, stating that the total impulse on an object causes its change in momentum. in this problem, you compare predictions of the three theories in one particular case. a 2.40-kg object has velocity 7.00ĵ m/s. then, a constant net force 14.0Ć® n acts on the object for 3.50 s. a) calculate the object's final velocity, using the impulseāmomentum theorem.
vf= m/s
b) ) calculate its acceleration from a=(vf-vi)/Ī“t
a= m/s^2
c) calculate its acceleration from a=Ļf/m
a= m/s^2
d) find the object's vector displacement from Ī“r=vit+(1/2)at^2
Ī“r= m
Answers: 3
Physics, 22.06.2019 08:30
An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?
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Physics, 22.06.2019 09:00
As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy
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Physics, 22.06.2019 14:30
In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.
Answers: 1
There are (one can say) three coequal theories of motion for a single particle: newton's second law...
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