Energy unit 2

Based on the picture, if the roller coaster car nearly stops as it crosses hill X, what changes in energy occur as it moves between hill X and hill Y?

• Kinetic changes to potential, then some potential changes to kinetic.

• Potential changes to kinetic, then some kinetic changes to potential

• Kinetic changes to potential, then some potential changes to thermal

• Thermal changes to potential, then some potential changes to thermal.

When does the ball have maximum potential energy and minimum kinetic energy?

• R and T

• R

• S

• T

When is the rocket's potential energy increasing and its kinetic energy decreasing?

• when the rocket is at the peak of flight, only

• when the rocket's motor is burning and when the rocket is free falling

• when the rocket's motor is burning and when the rocket is ascending

• when the rocket is free falling, only

Where does the ball have decreasing kinetic energy and increasing potential energy?

• R and T

• R

• S

• T

Where is the ball's potential energy at its maximum and its kinetic energy at its minimum?

• R

• T

• V

• Z

Which series shows decreasing potential energy and increasing kinetic energy?

• T,Y,Z

• W,X,Y

• S,T,U

• V.X.Z

Energy based on the position of the item is called?

• Potential energy

• Kinetic energy

• kinesis Energy

• Position energy

Where is the ball's kinetic energy at its maximum and potential energy at its minimum?

• R

• X

• V

• Z

What statement is correct about the ball?

• It went upward because of the force of air resistance, then it fell due to the force applied by Elisha's hand.

• it went upward because of the force applied by Elisha's hand, then it fell due to the force of gravity.

• It went upward because of the force of gravity, then it fell due the force of air resistance.

• It went upward because of the force of friction, then it fell due to the force of gravity.

Which describes best the energy conversion of the roller coaster?

• At position A the roller coaster has all potential energy, then at B the energy converts to half potential and half kinetic, and at C the roller coaster has all kinetic energy

• At position A the roller coaster has all kinetic energy, then at B the energy converts to all potential energy and at C the energy has half potential and half kinetic energy

• At position A the roller coaster has half potential and half kinetic energy, at B the roller coaster has all kinetic energy, and at C the roller coaster has all potential energy