Energy
What is the kinetic energy gain for a roller coaster car descending from the top of a track to the bottom, assuming the residual frictional forces are negligible and the increase in height is zero?
Kinetic energy is slightly less than gravitational potential due to non-conservative force work.
Kinetic energy is greater than the initial gravitational potential since its speed increases downhill.
Completely unpredictable because complex factors like wind resistance and material deformation.
Kinetic energy matches the gravitational potential lost as it converts to this form.
Two objects one with mass m and the other M (M >m) are launched directly upwards from the ground with velocity v. Which one reaches a greater height?
They both reach the same height
Object with mass M
Cannot be determined
Object with mass m
The magnitude of work is equal to all of the following EXCEPT
the change in the kinetic energy of an object
quotient of force and object's displacement
final minus initial kinetic energy of a given object
product of force and object's displacement
What is the equation for kinetic energy of an object?
Bobby, of mass m, and Sally, of mass 0.75m, slide down the same frictionless slide. Who has more kinetic energy at the bottom of the slide?
Sally
Bobby
They both have the same kinetic energy at the bottom of the slide.
It depends on the angle of the slide.
What would happen to the amount of work done by gravitational forces on an object dropping freely from rest, if its dropping distance were halved but its mass were doubled in anticipation of assessing work-energy principle?
The work done decreases by half following the shortening of the drop distance.
It doubles due to the increased mass of the object.
The work done would remain unchanged since both mass increases and distance decreases proportionally.
No direct conclusion can be drawn without additional information on velocity changes.
Which quantity measures how fast work is done?
Velocity
Force
Power
Momentum

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In a pendulum swing at its highest point, what kind of energy is at its maximum?
Kinetic energy
Gravitational potential energy
Thermal energy
Sound Energy
The "k" variable in Hooke's Law represents the
spring constant
displacement
angular displacement
force
When an oscillating spring subject begins from rest and starts to compress, how does it store energy?
Elastic potential energy
Kinetic energy
Radial potential energy
Chemical energy