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1. A 12 kg dog is running at a velocity of 5 m/s. How much kinetic energy does it have?

2. A 5000 kg truck is moving at a velocity of 30 m/s. How much kinetic energydoes it have?

3. If you lift a 50 N watermelon to the top of a 2 m fridge, how much potential energy does it have?

4. Your angry teacher is holding a 1 N book over your head at a height of 0.5 m. How much potential energy does the book have?

5. Two divers are standing at the end of a 10 m diving platform. The first diver, Andy, weighs 20 N. The second diver, Jim, weighs 30 N. Which one has morepotential energy?g

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Drop height:207 cm

Total length:552

Average speed:110.4 cm/s

Time: 4 sec

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Potential energy= mass x height

Kinetic energy=1/2xmassxvelocity2

KE=1/2mv2

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Potential energy is when you add energy and distance. It shows the object how far to go at what speed it should be going. When you mix the energy and distance together it creates force x distance

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When your body weight feels like it changes because your in a free fall its weightlessness. For example at the top of the tower of a free-fall ride, a 100-pound rider would feel 100 pounds of force from the seat pushing as an external force upon her body. When him/her fall from the tower they feel like they have no weight because the forces leveled out. http://www.learner.org/exhibits/parkphysics/freefall.html

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Momentum pertains to the quantity of motion that an object possesses. Any mass that is in motion has momentum.momentum depends upon mass and velocity.a roller coaster cars moving at a high speed has a lot more momentum than a base ball moving at to speed because the roller coaster has more mass.

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A g is a unit of acceleration equal to the acceleration caused by gravity.

1 g= about the speed of 10 m/s

If an object is said to experience 3 g's of acceleration, then the object is changing its speed at a rate of about 30 m/s every second.

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Motion along a curve or through a circle is always caused by a centripetal force. This is a force that pushes an object in an inward direction.

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Objects that are changing there speed or their direction are said tone accelerating.

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Roller coasters look dangerous but

Are really safe. Scientists use physics to

tell wether the roller coaster will brake down

Or not