Answer:
Perceptual
Explanation:
This is the level of awareness that is needed to know position and movement by the five senses.
Answer: The average speed over the entire trip is 3.94 m/s
Explanation:
As we know :
Let the distance of straight line from point to point be = d
Total distance covered = 2d
Time taken to cover the forward journey =
Time taken to cover the backward journey =
Total time for the journey = Time taken to cover the forward journey + Time taken to cover the backward journey =
Average speed =
Thus average speed over the entire trip is 3.94 m/s
Answer:
27km.
Explanation:
Jessie will run for a duration of time, which is the time it takes for Melissa and Rory to meet each other.
Together combined, Melissa and Rory runs at 14km/h. The bike trail is 21km, so it will take 1.5 hours.
Jessie runs at 18km/h, so Jessie will run 18 * 1.5 = 27km.
Answer:
speed
=
12
m/s
Explanation:
We're asked to find the initial velocity of the box, given it constantly accelerated at
−
3
m/s
2
for
24
m
before coming to a stop.
To do this, we can use the equation
(
v
x
)
2
=
(
v
0
x
)
2
+
2
a
x
(
Δ
x
)
−−−−−−−−−−−−−−−−−−−−−−
where
v
x
is the final velocity of the box (which is
0
since it came to rest)
v
0
x
is the initial velocity of the box (what we're trying to find)
a
x
is the acceleration of the box, given as
−
3
m/s
2
(negative because it's directed opposite to motion; i.e. it is decelerating)
Δ
x
is the distance traveled by the box, given as
24
m
Plugging in knonw values, we have
0
=
(
v
0
x
)
2
+
2
(
−
3
l
m/s
2
)
(
24
l
m
)
v
0
x
=
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
∣
∣
12
l
m/s
∣
∣
−−−−−−−−−−−−
The truck was thus traveling at a speed of
12
m/s
.
Answer:
the tension is the greatest force the system
Explanation:
For this exercise we use Newton's second law, in the equilibrium condition, this means that the acceleration is zero a = 0
X-axis (horizontal)
FE - Tₓ = 0
Fe = Tₓ
Y axis (vertical)
- W = 0
T_{y} = W
let's use trigonometry for the stress components
sin θ = Tₓ / T
Tₓ = T sin θ
cos θ = T_{y} / T
T_{y} = T cos θ
we substitute
FE = T sin θ
W = T cos θ
Since the sine and cosine function have values between 0 and 1, the voltage must be greater than the electrical force and greater than the weight of the body.
Therefore the tension is the greatest force the system