C. 29 m/s
Basing on the information given, we can compute for the velocity with the following
Mass = 11 lb. convert to kg = 5 kg
Gravity = 9.8 m/s2
Time (final) = 3.0 s
v= at
v = 9.8m/s2(3.0s)
= 29.4 m/s
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The resultant force is obtained by taking into account the magnitude and direction of all the forces involved.
<h3>What is motion?</h3>
Motion refers to change in position with respect to time. The instantaneous velocity is the velocity at a given time during motion.
Since force is a vector quantity, we must note that the net force will point in a given direction after taken all other forces into account. The net/resultant force is the force tat will have the same effect in magnitude and direction as all the forces taken together.
Learn more about resultant force: brainly.com/question/7041906
Answer:
Is the sum of a vector of two or more vectors.
(a) 
The radius of the trajectory of a charged particle moving perpendicular to a magnetic field is given by

where
m is the mass of the particle
q is its charge
v is its velocity
B is the strength of the magnetic field
In this problem, we have:


B = 1.20 T
r = 0.231 m
Solving for q, we find its charge:

(b) 3
The charge of an electron is

While the charge of this oxygen ion is

So, the ratio between the two charges is

(c) Because an ion is an atom that has gained/lost an integer number of electrons
An ion is an atom that has gained/lost an integer number of electrons. In this particular case, we see that the charge of the oxygen ion is 3 times that of the electron: this means that the ion has gained/lost exactly 3 electrons.
The ratio found in part (b) cannot be a fraction, because that would mean that the atom has gained/lost a fractional number of electrons: but this is impossible, since the electron is a fundamental particle so it cannot be "divided", therefore the ratio must be an integer.
I am pretty sure that the correct answer is C. On the way up, on the way down, and at the highest point its acceleration is 9.8downward. I consider this one to be the right one because <span> the frog is always goes downward due to </span><span> constantly accelerating of gravity. If frog jumps, the upward velocity will be reduced because of force of gravity. Hope everything is clear!</span>