Question

A particle moves according to a law of motion s = f(t), t ≥ 0, where t is measured in seconds and s in feet. (If an answer does not exist, enter DNE.) f(t) = t3 − 8t2 + 26t

A. Find the acceleration at time t and after 1 second.

a(t) = ft/s2

a(1) = ft/s2

B. When is the particle speeding up? (Enter your answer using interval notation.)

c. When is it slowing down? (Enter your answer using interval notation.)

Answer #1

A particle moves according to a law of motion
s = f(t),
t ≥ 0,
where t is measured in seconds and s in feet.
(If an answer does not exist, enter DNE.)
f(t) = t3 − 8t2 + 23t
(a) Find the velocity at time t.
v(t) = ft/s
(b) What is the velocity after 1 second?
v(1) = ft/s
(c) When is the particle at rest?
(d) When is the particle moving in the positive direction? (Enter
your...

A particle moves according to a law of motion s = f(t), t ≥ 0,
where t is measured in seconds and s in feet. (If an answer does
not exist, enter DNE.) f(t) = t3 − 8t2 + 27t (a) Find the velocity
at time t. v(t) = ft/s (b) What is the velocity after 1 second?
v(1) = ft/s (c) When is the particle at rest? (d) When is the
particle moving in the positive direction? (Enter your...

A particle moves according to a law of motion
s = f(t),
t ≥ 0,
where t is measured in seconds and s in
feet.
f(t) =
t3 − 15t2
+ 72t
(a) Find the velocity at time t.
v(t) =
(b) What is the velocity after 5 s?
v(5) =
(c) When is the particle at rest?
t = s (smaller value)
t = s (larger value)
When is the particle moving in the positive direction? (Enter
your answer in interval...

A particle moves according to a law of motion
s = f(t),
t ≥ 0,
where t is measured in seconds and s in
feet.
f(t) =
t3 − 15t2
+ 72t
(a) Find the velocity at time t.
v(t) =
(b) What is the velocity after 5 s?
v(5) =
(c) When is the particle at rest?
t = s (smaller value)
t = s (larger value)
When is the particle moving in the positive direction? (Enter
your answer in interval...

A particle moves according to a law of motion , , where is
measured in seconds and in feet. Find the velocity at time . What
is the velocity after second? When is the particle at rest? When is
the particle moving in the positive direction? Find the total
distance traveled during the first seconds. Draw a diagram like
Figure 2 to illustrate the motion of the particle. Find the
acceleration at time and after second. Graph Icon Graph the...

The function s(t) describes the position of a particle moving
along a coordinate line, where s is in feet and t is in
seconds.
s(t) = 3t2 - 6t +3
A) Find the anti-derivative of the velocity function and
acceleration function in order to determine the position function.
To find the constant after integration use the fact that
s(0)=1.
B) Find when the particle is speeding up and slowing down.
C) Find the total distance from time 0 to time...

A
particle moves in a straight line and its position is given by
s(t)=t^3 - 6t^2-36t +66, where s is measured in feet and t in
seconds. Find the intervals when the particle increases its
speed.

3. A particle moves in simple harmonic motion according
to x = 3 cos(10t)., where x is in meters and t is in seconds, its
maximum acceleration is?
A. 30sin(10t) m/s/s
B. 30cos(10t) m/s/s
C. 50 m/s/s
D. 150 m/s/s
E. 300 m/s/s

A particle moves in the x direction according to the equation
x(t)=bt3+ct2+d, where b = 7.0 m/s3 , c = -11 m/s2 , and d = 20
m.
What is its AVERAGE ACCELERATION in the interval t = 2.0 s to t
= 5.0 s?

The acceleration of a particle that moves linearly is given as ?
= - (0.1 + sin (? / 0.75)). The unit of acceleration is m / s2 and
the unit of s is m. In t seconds, when s = 0, b and v = 0.98 values
are as in the table. Calculate the velocity of the particle when
(i) s = -1 m, (ii) the position of the particle when the velocity
is maximum (iii) the maximum velocity...

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