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The quantity represented by is a function that changes over time (i.e., is not
constant).
Part A: The quantity represented by is a function that changes over time (i.e., is not constant).
True
False
Part B: The quantity represented by is a function of time (i.e., is not constant).
True
False
Part C: The quantity represented by is a function of time (i.e., is not constant).
True
False
Part D: The quantity represented by is a function of time (i.e., is not constant).
True
False
Part E: A particle moves with constant acceleration . The expression represents the particle’s velocity at what instant in time?
at time
at the “initial” time when a time has passed since the beginning of the particle’s motion, when its velocity was
More generally, the equations of motion can be written as
and .
Here is the time that has elapsed since the beginning of the particle’s motion, that is, where is the current time and is the time at which we start measuring the particle’s motion. The terms and are, respectively, the position and velocity at. As you can now see, the equations given at the beginning of this problem correspond to the case , which is a convenient choice if there is only one particle of interest.
Equations missing in the given question. Based on standard question in the book, I am solving this question as follows: Kinmatic eqautions: x(t)=xo + Vot +(1/2)at2 v(t)= Vo + at x(t) is the position of the particle at a given instant of time xo is the initial position v(t) is the velocity of the particle at a given instant of time vo is the intial velocity of the particle a is the acceleration
(A) The quantity represented by x is a function that changes over time (i.e., is not constant).
TRUE (as the equation includes the term t)
(B) The quantity represented by xo is a function of time (i.e., is not constant).
FALSE (as xo is independent of t )
(C) The quantity represented by Vo is a function of time (i.e., is not constant).
FALSE (as initial velocity is independent of t)
(D) The quantity represented by v is a function of time (i.e., is not constant).
TRUE (as the equation includes t)
(E) A particle moves with constant acceleration . The expression (v(t)= Vo + at) represents the particle’s velocity at what instant in time.
Ans: when a time has passed since the beginning of the particle’s motion.
These are basic physics questions that can be answered easily.
Part A
True
Part B
False
Part C
False
Part D
True
Part E
V^2=V^2_i+2n(x-x_i)
The third is
Part F
When a time has passed since V_i was the particle’s velocity
The third is the best.
Part G
x_B(t)=x_i + 0.5v_i(t-t_1)+a(t-t1)^2
The sixth answer
Part H
t=2t_1+V_i/2a
The second answer is
I hope this helps!
Engineer.Extraordinaire
Equations missing in the
given question. Based on standard question in the book, I am
solving this question as follows:
Kinmatic
eqautions:
x(t)=xo + Vot +
(1/2)at^2
v(t)= Vo +
at
x(t)
is the position of the particle at a given instant of
time
xo is the initial position
v(t) is
the velocity of the particle at a given instant of
time
vo is the intial velocity of the
particle
a is the acceleration
(A) The quantity
represented by x is a function that changes over time
(i.e., is not constant).
TRUE (as the equation
includes the term t)
(B) The quantity
represented by xo is a function of time (i.e., is not
constant).
FALSE (as xo is
independent of t )
(C) The quantity
represented by Vo is a function of time (i.e., is not
constant).
FALSE (as initial
velocity is independent of t)
(D) The
quantity represented by v is a function of time (i.e., is
not constant).
TRUE (as the equation
includes t)
(E) A
particle moves with constant acceleration . The expression (
v(t)= Vo + at) represents the particle’s velocity at what
instant in time.
Ans: when a time has passed since the beginning of the particle’s
motion.