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hjlf
4 years ago
6

A hockey puck wont slide very far on concrete or asphalt, but it will slide for a very long time on ice. Why is this?

Physics
2 answers:
Juliette [100K]4 years ago
8 0

Answer:

Concrete and Asphalt are much rougher surfaces and have a higher coefficient of friction because they generate more resistance to an object in motion. Ice has less friction and less energy is lost to heat, causing the puck to slide much further.

Ilya [14]4 years ago
7 0
When hockey players push the puck along the ice it slides causing heat which melts the ice causing the friction against the ice to be less.
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3 years ago
A rocket has a mass 250 x (10^3) slugs on earth. Specify(a) its mass in SI units, and(b)its weight in SI units.If the rocket is
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Explanation:

It is given that,

Mass of the rocket, m=250\times 10^3\ slugs

(a) The SI unit of mass is kilogram (kg). The relation between slugs and the kg is given by :

1 slug = 14.59 kg

So, 250\times 10^3\ slugs=250\times 10^3\times 14.59

Mass of the rocket, m = 3647500 kg

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(c) If the rocket is placed on the moon. The acceleration due to gravity on the moon is, a=5.3\ ft/s^2=1.61\ m/s^2

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