Answer:
The coefficient of kinetic friction between the puck and the ice is 0.11
Explanation:
Given;
initial speed, u = 9.3 m/s
sliding distance, S = 42 m
From equation of motion we determine the acceleration;
v² = u² + 2as
0 = (9.3)² + (2x42)a
- 84a = 86.49
a = -86.49/84
|a| = 1.0296
= ma
where;
Fk is the frictional force
μk is the coefficient of kinetic friction
N is the normal reaction = mg
μkmg = ma
μkg = a
μk = a/g
where;
g is the gravitational constant = 9.8 m/s²
μk = a/g
μk = 1.0296/9.8
μk = 0.11
Therefore, the coefficient of kinetic friction between the puck and the ice is 0.11
Answer:
hello hi how are you glad you're good goodbye
Asteroids are too small to have atmospheres
Explanation:
Those tools that helps to make our work easier ,faster and more convenient in our daily life it is called simple Machine.
Cryosphere is the sphere of earth that includes icebergs.
There are 5 main sphere of earth:
- Atmosphere (sphere that comprises of air. It is further divided into subsphere)
- Biosphere (Sphere that consists of living thing)
- Geosphere/ Lithosphere (sphere that counts land, rocks and minerals etc.)
- Hydrosphere (sphere that includes water bodies such as sea, river etc.)
- Cryosphere (sphere that includes frozen part of water such as icebergs. Arctic ocean and continent of Antarctica are example of cryosphere).
