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Setler [38]
2 years ago
6

the amount of force needed to keep a 0.2 kg hockey puck moving at a constant speed of 8m/s on friction less ice is ____ N

Physics
2 answers:
Art [367]2 years ago
8 0

Answer:

F = 0 N

Explanation:

Given that,

Mass of the hockey puck, m = 0.2 kg

Speed of hockey puck, v = 8 m/s

As the speed is constant. So, there is no change in the velocity. As a result, the acceleration of the hockey puck is 0. Force is given by :

F=ma

Since, a = 0

F = 0

So, the amount of force needed to keep a 0.2 kg hockey puck moving at a constant speed of 8 m/s on friction less ice is zero newton.

steposvetlana [31]2 years ago
6 0

If there is really no friction and no air resistance, then <em>NO force</em> is needed to keep an object moving in a straight line at constant speed.  Check out Newton's first law of motion again.

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The final velocity of the red barge in the collision elastic is 0.311 m/s when it collides with blue barge pf mass 1000000 kg.

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<h3>What is elastic collision velocity? </h3>
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