Answer:
they cant travel through a vacuum
The area under the velocity time graph is 125 m and the meaning of the area is displacement.
<h3>
What is area under velocity - time graph?</h3>
The area under a velocity time graph represents the displacement of the object.
total area of the graph = A1 + A2
total area of the graph = ¹/₂ (base₁)(height₁) + ¹/₂ (base₂)(height₂)
total area of the graph = ¹/₂(4)(40) + ¹/₂(3)(30)
total area of the graph = 125 m
Thus, the area under the velocity time graph is 125 m and the meaning of the area is displacement.
Learn more about velocity time graph here: brainly.com/question/4710544
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<span>As it is uniform circular motion therefore speed is constant. Therefore we can rule out option B. Also in circular motion the direction of velocity vector changes therefore velocity can't be constant. Therefore option B is incorrect as well. Also centripetal acceleration is always towards the center so option D is wrong as well.
That implies
option A is correct.</span>
Answer:
Explanation:
the maximum speed is reached when the drag force and the weight are at equilibrium, therefore:
To calculate the velocity after 100 meters, we can no longer assume equilibrium, therefore:
(1)
consider the next equation of motion:
If assuming initial velocity=0:
(2)
joining (1) and (2):
(3)
To plot velocity as a function of distance, just plot equation (3).
To plot velocity as a function of time, you have to consider the next equation of motion:
as stated before, the initial velocity is 0:
(4)
joining (1) and (4) and reducing you will get:
solving for v:
Plots:
