Dynamics
When a single object is moving in a straight line across a frictionless surface, which of the following quantities conserved?
Linear Momentum
Kinetic Energy
Speed
Mechanical Energy
When a theoretical model of projectile motion is applied to scenarios with extremely high speeds, which factor is most likely to invalidate the model's predictions due to relativistic effects?
Time dilation
Air resistance
Gravitational pull
Initial launch angle
How does increasing the angle between two forces applied to an object affect their resultant magnitude?
It increases until reaching a maximum when they are perpendicular to each other.
It remains constant regardless of changes in angle between forces.
It increases only after surpassing ninety degrees between them and then continues growing indefinitely as angle widens further.
It decreases steadily as angle increases from zero to one hundred eighty degrees.
If two particles have equal momenta but different masses, how do their kinetic energies compare?
The particle with less mass has greater kinetic energy.
The particle with more mass has greater kinetic energy.
It cannot be determined without additional information about velocities.
Both particles have equal kinetic energies.
What would be observed if two waves that are initially in phase but have slightly different frequencies interfere over a long distance?
They cancel out each other completely due to destructive interference.
They amplify persistently creating standing waves at fixed positions along their paths.
Their interferences produce a wave whose frequency is average of both frequencies.
They create beats at intervals depending on frequency difference.
What force is necessary to maintain an object at rest?
Gravitational force
Zero net force
Frictional force
Normal force
Which characteristic would cause an orbiting satellite to increase its orbital speed without propulsion or outside forces acting upon it?
Decreasing its orbital radius while conserving angular momentum leads to increased orbital speed due to Kepler's second law (equal areas in equal times).
Increasing its mass which will inherently increase gravitational attraction causing higher orbital velocity by Newton's law of universal gravitation.
Reducing its temperature so that thermal motion doesn't counteract gravitational forces keeping it in orbit around Earth.
Increasing its altitude above Earth’s surface since gravity decreases with distance resulting in lower gravitational pull against its motion.

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In Newton's first law, an object at rest will stay at rest unless acted upon by what?
A balanced force
Gravity
An unbalanced force
Friction
What happens to kinetic energy when you apply brakes on a bicycle?
It increases exponentially
It decreases
It remains constant
It transforms into potential energy
What effect does tripling the radius of a rotating solid disk have on its moment of inertia if its mass distribution remains uniform?
The moment of inertia triples.
The moment of inertia increases by a factor of six.
The moment of inertia increases by a factor of nine.
There is no change in moment of inertia.