What two things do you need to know to describe the velocity of an object?
2 answers:
By definition, we have that the speed of an object is given by:
Where,
d: distance [in units of length: meters, feet, miles]
t: time [in units of time: minutes, seconds, hours]
Therefore, knowing the distance traveled, and the time to travel this distance, we can know the speed of an object.
Then, since velocity is a vector, then we need the direction of the vector.
Therefore, the velocity vector can be written as:
Answer:
two things you need to know to describe the velocity of an object are:
1) Magnitude (speed)
2) direction
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Answer:
The ratio of the orbital time periods of A and B is
Solution:
As per the question:
The orbit of the two satellites is circular
Also,
Orbital speed of A is 2 times the orbital speed of B
(1)
Now, we know that the orbital speed of a satellite for circular orbits is given by:
where
R = Radius of the orbit
Now,
For satellite A:
Using eqn (1):
(2)
For satellite B:
(3)
Now, comparing eqn (2) and eqn (3):