Answer: Vb is the vector (-5.37m/s, 8.59 m/s), with a module 10.13m/s
then the ratio Vb/Vr = 10.13m/s/5.37m/s = 1.9
Explanation:
We can use the notation (x, y) where the river flows in the x-axis and the pier is on the y-axis.
We have Vr = (5.37m/s, 0m/s)
Now, if the boat wants to move only along the y-axis (perpendicularly to the shore).
The velocity of the boat Vb will be:
Vb = (-c*sin(32). c*cos(32))
Then we should have that:
5.37 m/s - c*sin(32) = 0
c = (5.37/sin(32))m/s = 10.13 m/s
the velocity in the y-axis is:
10.13m/s*cos(32) = 8.59 m/s
So Vb = (-5.37m/s, 8.59 m/s)
the ratio Vb/Vr = 10.13m/s/5.37m/s = 1.9 where i used Vb as the module of the boat's velocity.
Newton’s first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
Newton’s second law is a quantitative description of the changes that a force can produce on the motion of a body. It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.
Newton’s third law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. The third law is also known as the law of action and reaction. This law is important in analyzing problems of static equilibrium, where all forces are balanced, but it also applies to bodies in uniform or accelerated motion.
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The first law represented in the game would be the candy. If you blow it, it would move but then stop due to friction.
The second law would be represented by blowing the candy. Since the candy was light, it would be easier to blow but if it was heavier, it would be a lot harder.
The final law represented in the game would be if you decided to blow the candy with a ballon instead, the candy would move the opposite direction the ballon is moving.
Answer:
When thermal energy is added to a substance, its temperature increases, which can change its state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation).
Explanation:
Answer:
A short circuit is an electrical circuit that allows
Explanation:
Answer:
Explanation:
A.
Given:
Vo = 21 m/s
Vf = 0 m/s
Using equation of Motion,
Vf^2 = Vo^2 - 2aS
S = (21^2)/2 × 9.8
= 22.5 m.
B.
Given:
S = 22.5 + 21 mm
= 22.521 m
Vo = 0 m/s
Using the equation of motion,
S = Vo × t + 1/2 × a × t^2
22.521 = 0 + 1/2 × 9.8 × t^2
t^2 = (2 × 22.521)/9.8
= 4.6
t = 2.14 s
