Answer:
ill try
Explanation:
let me find this answer for you
In the absence of a net force, an object can be at rest or in motion with a constant velocity.
<h3>What is Newton's first law of motion?</h3>
Newton's first law of motion states that an object at rest or uniform motion in a straight line will continue in that path <u>unless acted upon</u> by an external force.
This law is also called the law of inertia because it depends on mass.
F(net) = ma
when, F(net) = 0, acceleration will be zero and velocity will be constant.
Thus, in the absence of a net force, an object can be at rest or in motion with a constant velocity.
Learn more about net force here: brainly.com/question/11556949
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Answer:
<em>a) 28877 AU</em>
<em>b) 1.795 sec</em>
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Explanation:
Time it took the radio signal to reach earth = 4 hours = 4 x 3600 = 14400 s
speed of radio signal = speed of vacuum speed of light = 3 x 10^8 m/s
Distance traveled by this signal = speed x time
distance = 3 x 10^8 x 14400 = 4.32 x 10^12 m
One Astronomic unit AU is the distance between the Earth and the sun and it is approximately equal to 1.496 x 10^8 m
The distance traveled by the signal in AU = (4.32 x 10^12)/(1.496 x 10^8) = <em>28877 AU</em>
b) The minimum separation between Earth and Mars = 0.36 AU
This distance = 0.36 x 1.496 x 10^8 = 538560000 m
Time that will be taken for a radio signal to travel this distance = distance/speed
==> 538560000/(3 x 10^8) = <em>1.795 sec</em>
They do it when they are moving for a while or they are going fast
Pretty sure it is weather :))
