Which statement best describes the change in an objects momentum if the net force acting on the object is greatly increased ?
2 answers:
<u>Answer:</u>
<em>The object’s momentum will greatly increase if the net force acting on the object is greatly increased. So option C is the best statement which describes the change in object momentum.</em>
<u>Explanation:</u>
So as the force is directly proportional to momentum and it is obtained by performing the first order derivation of momentum, the variation in force and momentum will have to be same.
The force being the derivative of momentum indicates that if the net force acting on object is greatly increased means the momentum will also be undergoing great increase as the acceleration of the object will also be increased greatly due to increase of force.
Answer:
Answer C : The object's momentum will greatly increase
Explanation:
Recall that force and linear momentum are closely related by the equation:
Both, Momentum Change and Force (F) are in the numerator of on either side of the equation, so they are in direct proportionality. A large force (force greatly increased) will be the reflection of a large change in momentum.
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A)
The total energy of the system is equal to the maximum elastic potential energy, that is achieved when the displacement is equal to the amplitude (x=A):
(1)
where k is the spring constant.
The total energy, which is conserved, at any other point of the motion is the sum of elastic potential energy and kinetic energy:
(2)
where x is the displacement, m the mass, and v the speed.
We want to know the displacement x at which the elastic potential energy is 1/3 of the kinetic energy:
Using (2) we can rewrite this as
And using (1), we find
Substituting into the last equation, we find the value of x:
B)
In this case, the kinetic energy is 1/10 of the total energy:
Since we have
we can write
And so we find:
Answer:
1.70 J
Explanation:
The heat dissipated is the difference in the kinetic energies.
This is given by
and
are the initial and final velocities.
With <em>m</em> = 0.175 kg,
The negative sign appears because energy is lost.