Answer:
it's answer is 1 newton
It will take approximately 32.0 seconds for the package to reach sea level from the time it is dropped, assuming that air resistance can be neglected.
We can assume that the package, like the plane, has an initial velocity of 342 km/hour in the horizontal direction. We also assume that air resistance can be neglected.
Assuming that the package was dropped from rest at a height of h, the time it takes for the package to reach sea level can be calculated using the equation:
h = (1/2) * g * t²
where g is the acceleration due to gravity (9.8 m/s²) and t is the time it takes for the package to reach sea level.
Solving for t, we get:
t = sqrt(2h/g)
To convert the initial velocity of the package from km/hour to m/s, we can use the conversion factor:
1 km/hour = 0.2778 m/s
Therefore, the initial velocity of the package is:
v0 = 342 km/hour * 0.2778 m/s/km/hour = 95.0 m/s
if the package was dropped from a height of 5000 meters, the time it takes for the package to reach sea level is:
h = 5000 m
t = sqrt(2h/g) = sqrt(2*5000/9.8) = 32.0 seconds
Therefore, it will take approximately 32.0 seconds for the package to reach sea level from the time it is dropped, assuming that air resistance can be neglected.
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The time a dropped package takes to reach sea level from a plane is determined by its vertical motion. If the package retains only horizontal velocity when released, the time taken would be calculated using the height from which the object is dropped. However, to give a numerical value of time, we need to know the exact height.
The time it takes for the package dropped from the plane to reach sea level is determined exclusively by the package's vertical motion, assuming the package does not face air resistance. Specifically, the time of flight for a projectile launched and landing at the same elevation is governed by the equation: t = 2*v/g, where v represents the initial vertical velocity and g is the acceleration due to gravity. From the scenario, it seems the package retains only horizontal velocity when released since it's dropped down directly rather than being thrown downward, hence rendering initial vertical velocity as zero. Simply put, the package only begins to accelerate in the vertical direction once it's dropped, meaning the time taken would be calculated using the equation: t = √(2h/g), h being the height from which the object is dropped.
In the provided context, unfortunately, we need the height from which the package is dropped to give a specific numerical value of the time in seconds. If we knew the height of the plane at the time the package was dropped, we'd recalculate the time in seconds more precisely.
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Answer:
the magnitude of the ball's acceleration as it comes to rest on the foam is 817.5 m/s²
Explanation:
Given the data in the question;
initial velocity; u = 0 m/s
height; h = 2.5 m
we find the velocity of the ball just before it touches the foam.
using the equation of motion;
v² = u² + 2gh
we know that acceleration due gravity g = 9.81 m/s²
so we substitute
v² = ( 0 )² + ( 2 × 9.81 × 2.5 )
v² = 49.05
v = √49.05
v = 7.00357 m/s
Now as the ball touches the foam
final velocity v₀ = 0 m/s
compresses S = 3 cm = 0.03 m
so
v₀² = v² + 2as
we substitute
( 0 )² = 49.05 + 0.06a
0.06a = -49.05
a = -49.05 / 0.06
a = -817.5 m/s²
Therefore, the magnitude of the ball's acceleration as it comes to rest on the foam is 817.5 m/s²
Answer:
Explanation:
Step one:
Given
mass m= 0.32kg
intital velocity, u= 14m/s
final velocity v= 22m/s
time= 0.06s
Step two:
Required
Force F
the expression for the force is
F=mΔv/t
F=0.32*(22-14)/0.06
F=(0.32*8)/0.06
F=2.56/0.06
F=42.67N
The average force exerted on the bat 42.67N
Answer:
ratio of the piccolo's length to the flute's length is 0.4916
Explanation:
given data
frequency of piccolo = 522.5 Hz
frequency of flute = 256.9 Hz
to find out
ratio of the piccolo's length to the flute's length
solution
we get here length of tube that is express as
length of tube = velocity of sound ÷ fundamental frequency .......................1
so here ratio of Piccolo length to flute that is
= 0.4916
so ratio of the piccolo's length to the flute's length is 0.4916
A.The time taken for the car to stop is 8.75 s
B.The distance travelled when the brakes were applied till the car stops is 136.89 m
A. Determination of the time taken for the car to stop.
Initial velocity (u) = 70 mph = 0.447 × 70 = 31.29 m/s
Final velocity (v) = 30 mph = 0.447 × 30 = 13.41 m/s
Time (t) = 5 s
Initial velocity (u) = 31.29 m/s
Final velocity (v) = 0 m/s
Deceleration (a) = –3.576 m/s²
Thus, the time taken for the car to stop is 8.75 s
B.Determination of the total distance travelled when the brakes were applied.
Initial velocity (u) = 31.29 m/s
Final velocity (v) = 0 m/s
Deceleration (a) = –3.576 m/s²
Therefore, the total distance travelled by the car when the brakes were applied is 136.89 m
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Answer:8.75 s,
136.89 m
Explanation:
Given
Initial velocity
velocity after 5 s is
Therefore acceleration during these 5 s
therefore time required to stop
v=u+at
here v=final velocity =0 m/s
initial velocity =31.29 m/s
(b)total distance traveled before stoppage
s=136.89 m
Answer:
part a)
k = 310 N/m
part b)
T = 0.51 s
Explanation:
Part A)
As per work energy theorem we have
Work done by gravity + work done by spring = change in kinetic energy
now we will have
Part B)
Time period of oscillation is given as