Answer:
The answer is
A. 9 m
Explanation:
Step one:
given data
1. A cat walks 14 m in a positive direction.
2. Walks 5 m in the opposite direction.
Step two:
<em>"The displacement can be defined as a quantity that refers to "how far out of place an object is, it is the object's overall change in position."</em>
Hence the displacement is= 14-5= 9m
Answer:
the faster an object moves the more kinetic it has. the more mass an object has, the more kinetic energy it has.
Answer:
w = w₀ M / (M + 2m)
Explanation:
This exercise can be solved using the concepts of conservation of angular momentum
L = I w
Let's write in angular momentum in two points
Initial. Before impact
L₀ = I w₀
Final. After the rock has stuck
= I w + (m r²) w
The system is formed by the disk and the rock, so that the forces and moments during the crash are internal and the angular momentum is preserved
L₀ =
I w₀ = (I + m r²) w
w = w₀ I / (I + m r²)
The roundabout is a disk so its moment of inertia is
I = ½ M r²
w = w₀ ½ Mr² / (½ M r² + mr²)
w = w₀ ½ M / (½ M + m)
w = w₀ ½ M2 / (M + 2m)
w = w₀ M / (M + 2m)
Sound travels faster in cold air bro