Physics Final Review

What is acceleration?

• The speed of an object in a straight line.

• The rate of change of velocity of an object.

• The distance covered by an object in a given time.

• The force applied to an object to change its motion.

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What is momentum?

• Momentum is the product of an object's mass and its velocity, calculated as p = mv.

• Momentum is the force applied to an object over time.

• Momentum is the change in an object's position over time.

• Momentum is the energy stored in an object due to its height.

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What is the principle of conservation of energy?

• The total energy in a closed system remains constant; energy can neither be created nor destroyed, only transformed.

• Energy can be created and destroyed in a closed system.

• Energy can be transformed but not created or destroyed in an open system.

• The total energy in a closed system can fluctuate over time.

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What is the difference between speed and velocity?

• Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

• Speed and velocity are the same; both refer to how fast an object is moving.

• Velocity is a scalar quantity that refers to how fast an object is moving, while speed is a vector quantity that includes both speed and direction.

• Speed is a vector quantity that includes both speed and direction, while velocity is a scalar quantity that refers to how fast an object is moving.

What is the significance of the slope of a distance-time graph?

• It represents the acceleration of the object.

• It indicates the distance traveled by the object.

• It represents the speed of the object.

• It shows the direction of the object's motion.

What is the difference between elastic and inelastic collisions?

• In elastic collisions, both momentum and kinetic energy are conserved; in inelastic collisions, momentum is conserved but kinetic energy is not.

• In elastic collisions, only momentum is conserved; in inelastic collisions, both momentum and kinetic energy are conserved.

• In elastic collisions, kinetic energy is conserved but momentum is not; in inelastic collisions, both are conserved.

• In elastic collisions, neither momentum nor kinetic energy is conserved; in inelastic collisions, both are conserved.

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What is the unit of force in the International System of Units (SI)?

• Pound (lb)

• Newton (N)

• Joule (J)

• Pascal (Pa)

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NGSS.HS-PS2-1

What is the relationship between mass and acceleration according to Newton's second law?

• Force equals mass times acceleration (F = m * a).

• Acceleration equals mass divided by force (a = m / F).

• Force equals acceleration divided by mass (F = a / m).

• Mass equals force times acceleration (m = F * a).

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NGSS.HS-PS2-1

What is kinetic energy?

• The energy of an object due to its motion, calculated as KE = 1/2 mv².

• The energy stored in an object due to its position.

• The energy released during a chemical reaction.

• The energy associated with the temperature of an object.

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What happens when two objects collide?

• Energy is transferred from one object to another.

• Both objects are destroyed upon impact.

• The objects bounce off each other without any energy transfer.

• One object absorbs all the energy from the other.

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