<span>CH4 I assume you're doing a test or something but I'm not good at explaining things so hopefully it's multiple choice! </span>
Answer:E. an object will remain in uniform motion unless acted upon by a force
Explanation:
Refer to the diagram shown below.
Neglect wind resistance.
g = 9.8 m/s².
Quantities are measured as positive upward.
When the ball is launched, it has a vertical velocity of - 3.5 m/s and a horizontal velocity of 25 m/s.
The time, t, for the ball to reach the ground is
(-3.5 m/s)*( t s) - 0.5*(9.8 m/s²)*( t s)² = - (270 m)
-3.5t - 4.9t² = - 270
4.9t² + 3.5t - 270 = 0
t² + 0.71433t - 55.102 = 0
Solve with the quadratic formula.
t = 0.5[-0.71433 +/- √220.918] = 7.0745 s or -7.788 s.
Reject negative time.
The horizontal distance traveled is
d = (25 m/s)*(7.0745 s) = 176.8625 m
Answer:
The horizontal distance from the girl to the ball will be 176.9 m (nearest tenth)
Answer:
A main sequence star that lacks the mass necessary to explode in a supernova so it goes KAbooM and then will become a white dwarf, a 'dead' star that has burned through all of its hydrogen and helium
eventually stop emitting light and heat and become black dwarfs.