Answer:
Capture Theory
Explanation:
According to capture theory, moon is passing space rock-asteroid which was captured into the orbit around the Earth due to gravity. Other planets have moons which are captured asteroid like Mars has two moons-Phobos and Deimos. Jupiter has many moons which are captured asteroids. Capture theory explains the difference in the composition of Earth and the moon.
Answer:
Explanation:
The dart will go forward horizontally with velocity of 19 m/s. It will also fall downwards with initial velocity of zero and gravitational acceleration of 9.8 m/s².
Distance PQ covered by the dart can be calculated using the following formula.
s = ut + 1/2 at²
u is initial velocity , a is acceleration and t is time.
Putting the values
s = 0 + 1/2 x 9.8 x .19²
= .1769 m
= 17.69 cm.
Answer
1.2245 s
Explanation
Using the Newton's law of linear motion,
v = u + gt
where v ⇒ Final velocity
u ⇒ initial velocity,
t ⇒ time to reach maximum height.
g ⇒ acceleration due to gravity.
v = u + at
v = 0 m/s
g = -9.8 m/s² (negative because the velocity is decreasing)
0 = 6 + -9.8t
9.8t = 6
t = 0.612244898 s
This is the time to reach maximum height. It will take the same time to come back to the hand.
so total time = 0.612244898 × 2
= 1.2245 s
b. ion.
c. electron.
d. neutron. user: which sentence best describes mass movement?
a. the steady pace of air bouncing off a mountain
b. the downhill movement of animals due to heavy snow in their normal home
c. the movement of particles within an atom
d. the downhill flow of soil and rock resulting from gravity
The answer would be B. Ion.