6000 newtons is the right answer
Answer:
1) The block of wood is at rest.
2) Weight and Normal Reaction (see attached diagram).
Explanation:
<u>Assumptions</u>
- The block of wood is a particle (a body whose mass acts at a point, so its dimensions don't matter).
- There are no other external forces involved.
<u>Question 1</u>
"At rest" or "resting" means that the <u>object isn't moving</u>.
Therefore, the block of wood is at rest.
<u>Question 2</u>
Forces that are acting on the block of wood:
- <u>Weight (W)</u>: Due to the particle's mass, m, and the acceleration due to gravity, g: W = mg
(Weight always acts downwards).
- <u>Normal Reaction (R or N)</u>: The reaction from a surface.
(Normal Reaction is always at 90° to the surface).
See attached diagram.
The phenomenon of "weightlessness" occurs when there is no force of support on your body. When your body is effectively in "free fall", accelerating downward at the acceleration of gravity, then you are not being supported.
Answer: If i'm not mistaken I think it A) potential
Answer:
90 km/h
Explanation:
we just divide the distance by the time to get the speed.