Answer:
The object will accelerate in the upward direction.
Explanation:
To know the direction in which the object will accelerate, we shall determine the net force acting on the object. This can be obtained as follow:
Upward force (Fᵤ) = 300 N
Downward force (Fₔ) = 200 N
Net force (Fₙ) =?
Fₙ = Fᵤ – Fₔ
Fₙ = 300 – 200
Fₙ = 100 N upward
Thus, the net force acting on the object is 100 N in the upward direction. This implies that the object will accelerate in the upward direction because the net force acting on the object is in the upward direction.
You should always measure your following distance in FEET
Answer:
The answer to the question is
At the instant she loses contact with the snowball, the angle (alpha) a radial line from the center of the snowball to the skier make with the vertical is 48.2 °
Explanation:
At the point where the skier loses contact with the snpwball we have the centripetal force given by
m·g·cos θ - N = 
Where N = 0 at the point the skier leaves the snowball
That is
m·g·cos θ = 
The height from which the skier drops from the snowball is given by
h = r - r·cosθ
Therefore the potential energy of the skier just before leaveing the snowball is
m·g·h = m·g·r·(1-cosθ)
From conservation of energy, the total energy of the skier is constant which means that is the potential energy is transformed to kinetic energy of the form
PE = KE That is
= m·g·r·(1-cosθ) or
= 2·m·g·(1-cosθ) Howerver since
m·g·cos θ =
then we have
m·g·cos θ = 2·m·g·(1-cosθ) which gives
cosθ = 2·(1-cosθ) or 3·cosθ = 2
or cosθ =
and θ =
= 48.1896851 °
≈48.2 °
The observation made by Justin about the caterpillar type feeding specifically over cottonwood tree (natural world) helped Justin to acquire scientific knowledge.
Answer: Option A
<u>Explanation:
</u>
And it was observed that the specific caterpillar only fed on the cottonwood tree. Therefore, the inference was made based on the observation only and no experimentation was done from Justin.
The given set of method depicts the observational experiment as Justin notices and acquires the set pattern of the specific caterpillar. The object was to notice the specific caterpillar to see what it’s feeding on and whether it is feeding on other or not. So, it indicates the world's nature.