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1. The phenomenon of "weightlessness" occurs when there is no force of support on your body. When your body is effectively in "free fall", accelerating downward at the acceleration of gravity, then you are not being supported.

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1. the quantity of motion of a moving body, measured as a product of its mass and velocity.

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the force that attracts a body toward the center of the earth, or toward any other physical body having mass. For most purposes Newton's laws of gravity apply, with minor modifications to take the general theory of relativity into account.

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4 sec

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Once you start cruising down that first hill, gravity takes over and all the built-up potential energy changes to kinetic energy. Gravity applies a constant downward force on the cars.

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The track was 4 and a half meters long and the drop height is 2 meters from the top to the bottom . The loopty loop was 67 height and 60 weigth.

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The gravity and acceleration both work together in a loopty loop.

When the cart goes up the acceleration is pushing the cart at the

same time the cart is getting a gravitational pull so the cart doesnt

go off the tracks

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The tallest roller coaster is the Kingda Ka roller coaster.

The fastest roller coaster is Kingda Ka roller coaster.

The longest drop is Kingda Ka roller coaster.

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When the coaster goes up there is potential energy that builds up. When the coaster goes down the kinetic energy builds up

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The Kingda Ka roller coaster has no passengers because it is being tested so no one gets hurt or even killed

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The first roller coaster was built on a icy hill in Russia.

The height was 70 ft and 80 ft. It was supported with wood.

Then after that roller coaster was built, around the world there are

other roller coaster that were made. Now most roller coasters are made out of

steel supporters. And are carefully constructed.

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KE=1/2 x mass x velocity2

KE=1/2mv2

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PE=mass x g x height

PE=m h x (9.8 m/s/s)

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1 Joule=1kg m2/s2

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"Changing their speed or their direction are said to be accelerating. The rate at which the speed or direction changes is referred to as acceleration." The cart of the roller coaster has different speeds and directions. The track has the directions up, down, and straight. When the cart goes up it goes slow, however when the cart goes down it goes fast. When the track is straight then it goes at a constant speed