Answer: <em>4</em><em>2</em><em>.</em><em>3</em><em>2</em><em> </em><em>ms-1</em>
Explanation:
v = u+ at
v = 24.4 + ( 3.2×5.6)
v = 42.32 ms-1
The total mass of the galaxy is 443.4 Solar mass
Orbital velocity (
) = 
where M= weight of galaxy
G= gravitational constatnt =
(given)
R = distance from centre =
Light years (given)=
km (1 ly=
billion km)
v= orbital velocity =
(given)
∴ According to the formula
= 
⇒
(cross multiplying and expanding)
⇒ 
⇒ 
⇒ 
1 solar mass = 
⇒ Mass in solar mass =443.4 Solar mass
⇒ M = 443.4 Solar mass
Learn more about Orbital velocity here :
brainly.com/question/22247460
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Answer:
An example of kinetic energy due to gravity can be a ball held in the air (Kinetic energy is energy an object has because of it's motion.).
Explanation: