Kinetic and Potential Ex.
A ball is rolling down a hill. What kind of energy does it have?
What is kinetic
What is the kinetic energy of a 55 kg boulder rolling down a hill at 10.2 m/s?
What is 2861.1 J
The unit of momentum
What is kg m/s
A 15 kilogram boulder sitting on top of a 1525 m mountain begins to roll down the mountain at 15 m/s . What is the potential energy of the boulder?
What is 224,175J
What's a joule?
What is unit of energy and work
A roller coaster is at the top of the track. What kind of energy does it have?
What is Potential
An axe is chopping through a log, with a mass of .86 kilograms. The axe is moving at a speed of 12.2 m/s. What is the kinetic energy of the log?
What is zero
The product of force and time
What is impulse
The type of energy found in car batteries.
What is chemical potential
The kickback of a gun as it is fired
What is recoil
What is variable must be squared to find kinetic energy?
What is velocity
In order to give a ball more kinetic energy, you must do more ________?
A. Energy B. Kinetic C. Work D. Mechanical
What is C
The unit of impulse
What is newton second
What is potential energy?
What is stored energy
A collision where there is less kinetic energy available after the collision that there was before
What is inelastic.
The kinetic energy of a ball at the bottom of a hill equals________.
What is potential energy at the top?
A 280 kilogram roller coaster car sits on top of a 25 meter hill. What is the kinetic energy of the car at the bottom of the hill?
What is 68,600 J
A 15 kilogram rock is moving at 12 m/s for 10 seconds. The force applied to stop the rock is
What is 18 newtons
The unit of potential energy
What is Joules
The constant velocity of an object that is reached when the drag force equals the force of gravity
What is terminal velocity
PE+KE=?
What is ME
If a 150 kilogram plane, traveling at 15 m/s crashes into a building, how much kinetic energy does the plane have on impact?
What is none...it is stopped
A 15 kilogram rock is rolling for 28 meters at 15 m/s then comes to a stop. The change of momentum is...
-225 kg m/s
How are potential energy and work similar?
What is Potential energy is mass, g and a distance.
Work is force (mass x g) for a distance
State the law of conservation of energy
What is energy is neither created nor destroyed, but may change forms