Comprehensive Physics Quiz: Units 4-9

When two identical billiard balls collide on a frictionless table, what remains constant during the collision?

• Total kinetic energy
• Potential energy
• Gravitational force
• Electrical charge

In a system of conservation of momentum, what determines the velocity of the center of mass after a collision?

• Mass of individual objects
• Initial velocities
• Collision type
• Total system energy

What physical principle explains why a skateboarder moves backward when throwing a backpack forward?

• Newton's First Law
• Conservation of Momentum
• Gravitational Potential
• Friction Principle

In an impulse calculation, which two variables directly determine the change in momentum?

• Mass and acceleration
• Force and time
• Velocity and distance
• Weight and friction

What happens to electrostatic force when the distance between two charges is doubled?

• Force increases quadratically
• Force decreases by a factor of 4
• Force remains constant
• Force becomes zero

In a wave, what is the relationship between frequency and wavelength?

• Directly proportional
• Inversely proportional
• No relationship
• Exponential relationship

What principle explains the recoil of a cannon when firing a cannonball?

• Energy conservation
• Momentum conservation
• Newton's Third Law
• Gravitational attraction

In an electromagnetic circuit, what three variables are related by Ohm's Law?

• Power, resistance, and current
• Voltage, current, and resistance
• Charge, energy, and time
• Magnetic field, force, and distance

What happens when a bar magnet is cut in half?

• Magnetic poles disappear
• Each half becomes a complete magnet
• Magnetic field collapses
• Magnetic charge is neutralized

How does gravitational force change as distance between objects increases?

• Increases linearly
• Decreases quadratically
• Remains constant
• Increases exponentially