Answer:
<u>The car's fast. The ground isn't moving.</u>
Hope this helped! :D
Answer:
Explanation:
Given the equation modelled by the height of the train given as:
s(t) = 18t²-2t³ for for 0 ≤ t ≤ 9
a) Velocity is the rate of change of displacement.
Velocity = dS(t)/dt
V = dS(t)/dt = 36t - 6t² miles
Velocity at t = 3hrs is determiner by substituting t = 3 into the velocity function.
V = 36(3) -6(3)²
V= 108 - 72
Velocity = 36mi/hr
b) for Velocity at time = 7hrs
V(7) = 36(7) - 6(7)²
V(7) = 252 - 294
V(7) = -42mi/hr
The velocity at t = 7hrs is -42mi/hr
c) Acceleration is the rate of change of velocity.
a(t) = dV(t)/dt
Given v(t) = 36t - 6t²
a(t) = 36 - 12t
Acceleration at t=1 is given as:
a(1) = 36 -12(1)
a(1) = 24mi/hr²
You are attracting electricity<span />
Answer:
The central atom in a lewis structure tends to be the least electronegative atom.
Explanation:
Lewis structures show each atom and its position in the structure of the molecule using its chemical symbol.
In Lewis structure, the central atom tends to be the least electronegative atom. Usually the central atom will be the one that has the most unpaired valence electrons or least electronegative.
Therefore, the best phrase that completes the sentence is "least electronegative".
Answer:
t = 0.25 seconds
Explanation:
Given that,
Initial speed of a bullet, v = 800 m/s
Distance from the target is 200 m
We need to find the time required for the bullet to reach the target. Time is simply calculated by the definition of velocity i.e.
So, it will take 0.25 seconds to reach the target.
