Answer:
.
Explanation:
The mechanical energy of the system will be the kinetic energy plus the elastic potential energy:
.
We know that the equation for the kinetic energy is
, where <em>m </em>is the mass of the object and <em>v </em>its velocity.
We know that the equation for the elastic potential energy is
, where <em>k</em> is the spring constant and
the compression (or elongation) respect to equilibrium.
So for our values we have:
.
Answer: The force of the engines is 5700N
Explanation:
By the second Newton's law, we have that:
F = m*a
Force equals mass times acceleration.
In this case, we have:
m = 1400kg
a = 3 m/s^2
And the force will be equal to the force of the engines, f, plus the force of the current, -1500 N (because this is pushing you back, so it is in the opposite direction than f), then we have:
F = f - 1500N
Then we have the equation:
f - 1500N = 1400kg*3m/s^2 = 4200N
f - 1500N = 4200N
f = 4200N + 1500N = 5700N
The force of the engines is 5700N
Answer:
distance and length are the same quantity
Answer:
<h2>Equilibrium</h2>
Explanation:
The pendulum is at rest ( or balance due to the equal action of opposing forces).