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2,250 joules

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2011-01-05 15:33:38
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What is the mechanical advantage of a simple machine that requires a force of 40 newtons input to lift a 200 newton object

A bottle cap opener is an example of what type of simple machine

What is the weight in newtons of a 10 kg mass on the earth's surface

Newton's Second Law of Motion states that when an unbalanced force acts on an object the object decelerates

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Q: A 45 kg skater is skating down a hill on roller blades at a a speed of 10 ms what is the kinetic energy of the skater?
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A 45 kg skater is skating down a hill on roller blades at a speed of 10.0 ms What is the kinetic energy of the skater?

KE=(0.5)(m)(v)^2 KE=225J


What kind of energy is used when roller skating?

Kinetic Energy. Kinetic is moving energy and potential energy is how far it could potentially move yet is staying still.


A 45.0 kg skater is skating down a hill on roller blades at a speed of 10.0 m's What is the kinetic energy of the skater?

Kinetic Energy = (1/2)(m)(v2) where m=mass of object, v=velocity of object Substituting values into the equation. Kinetic Energy = (1/2)(45)(10)2 = 2250 J


What is the kinetic energy of a 45.0 kg skater who is skating down a hill on roller blades at a speed of 10.0 m per s?

kinetic_energy = ½mv² = ½ × 45 kg × (10 m/s)² = 2250 Joules.


Where in the the motion of a roller coaster does it have the kinetic energy?

The back of a roller coaster has the most kinetic energy.


When does a roller coaster increase kinetic energy?

The roller coaster increases kinetic energy when its velocity is increasing.


Where is the kinetic energy the highest on a roller coaster?

The cars of a roller coaster reach their maximum kinetic energy when at the bottom of their path.


Can you use roller blades for figure skating?

If you are crazy enough to try, I don't see why not :)


In energy transformations when a roller coaster is at the top of the hill the kinetic energy is?

Kinetic energy comes from movement. If the roller coaster is moving at the top of the hill, it has kinetic energy. if the rollercoaster isn't moving then it has potential energy.


What is an example kinetic energy?

a roller coster


Does the roller coaster need kinetic energy to move down the tracks?

If its moving it has kinetic energy


When does a roller coaster reach its maximum kinetic energy?

maximum kinetic energy when at the bottom of their path.

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