"Confounding variable" is the choice among the following choices given in the question that best describes two <span>or more explanatory variables that are not separated. The correct option among all the options that are given in the question is the second option or option "b". I hope the answer has come to your help.</span>
2
Explanation:
Let us assume the mass of ship 2 = K
Mass of ship 1 = 4K
Condition:
Both ships have the same mass
The kinetic energy of a body is the energy due to the motion of it.
It is expressed as:
K.E =
m is the mass of the ship
v is the velocity;
Since both ships have equal velocity;
K.E of ship 1 = K.E of ship 2
\frac{1}{2} m v^{2} of ship 1 = \frac{1}{2} m v^{2} of ship 2
multiply through by 2;
4k x = k x
dividing by k;
4 v_{1} ^{2} = v_{2}^{2}
taking square root of both sides
V₂ = 2V₁
learn more:
Kinetic energy brainly.com/question/6536722
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Its a, metal is a good conductor of heat so yea
Hope this helps :)
Answer:
60 m
Explanation:
Case 1:
v₀ = initial speed = 25 mph = 11.2 m/s
v = final speed = 0 m/s
a = acceleration = ?
d = stopping distance = 15 m
using the kinematics equation
v² = v₀² + 2 a d
0² = 11.2² + 2 a (15)
a = - 4.2 m/s²
Case 2 :
v₀ = initial speed = 50 mph = 22.4 m/s
v = final speed = 0 m/s
a = acceleration = - 4.2 m/s²
d = stopping distance = ?
using the kinematics equation
v² = v₀² + 2 a d
0² = 22.4² + 2 (- 4.2) d
d = 60 m
<span>The most likely solution would be to check the commutator because the current is not reversing.</span>