Emission of light from an atom occurs when an electron
2 answers:
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Answer:
Given: Initial Velocity:0
Velocity: 25 m/s
Time :10 sec.
Acclereation?.
Use formula for acceleration,
Divide units to
So our acceleration is
If you want to, you can use kinematic equation
vi is inital velocity, since v1=0 we just have
Which is the same as first step, so we would get 2.5 m/s^2
Answer:
The angle of elevation of the rocket is increasing at a rate of 48.780º per second.
Explanation:
Geometrically speaking, the distance between the rocket and the observer (), measured in kilometers, can be represented by a right triangle:
(1)
Where:
- Horizontal distance between the rocket and the observer, measured in kilometers.
- Vertical distance between the rocket and the observer, measured in kilometers.
The angle of elevation of the rocket (), measured in sexagesimal degrees, is defined by the following trigonometric relation:
(2)
If we know that , then the expression is:
And the rate of change of this angle is determined by derivatives:
Where:
- Rate of change of the angle of elevation, measured in sexagesimal degrees.
- Vertical speed of the rocket, measured in kilometers per hour.
If we know that and
, then the rate of change of the angle of elevation is:
The angle of elevation of the rocket is increasing at a rate of 48.780º per second.