D is the answer because of the solar phonominals
Astronauts brought back 227kg of rock samples from the moon.
<h3>
Who is an astronaut?</h3>
A person who has been trained, outfitted, and sent into space by a human spaceflight program to serve as a commander or crew member is known as an astronaut (from the Ancient Greek words (astron), meaning "star," and (nautes), meaning "sailor"). The word is occasionally used to refer to anyone who flies into space, including scientists, politicians, journalists, and tourists, despite the fact that it is typically only designated for professional space travelers.
600 astronauts have made space flights since 1961. Up until 2002, only governments—either the military or civilian space agencies—sponsored and educated astronauts. A new class of astronaut was introduced in 2004 with the suborbital flight of the privately funded SpaceShipOne: the commercial astronaut.
Explanation:
1kg=2.20lb
500lb=(1/2.20*500)kg
500lb=227kg
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Answer:The gravitational force on the ball due to earth is exactly the same as the gravitational force on earth due to the ball
Explanation:
The gravitational force exist in pair. It form action-reaction pair.
From the calculation, the acceleration of the body is 26m/s^2.
<h3>What is motion under gravity?</h3>
When an object is thrown up or down, the motion of the body is influenced by the gravitational pull on the body.
Now;
Given that;
v = 39 m/s
t = 1.5 s
u = 0 m/s
a = ?
v = u + at
v = at
a = v/t
a = 39 m/s/1.5 s
a = 26m/s^2
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