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Physics Quiz 4

Authored by Alan Loredo

Physics

12th Grade

Used 2+ times

Physics Quiz 4
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the principle behind conservation of mechanical energy?

Mechanical energy is only conserved in certain situations

The total mechanical energy of a system remains constant if no external forces are acting on it.

Mechanical energy can be created or destroyed

Mechanical energy only applies to moving objects

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the equation for calculating impulse?

Impulse = Distance / Time

Impulse = Power * Time

Impulse = Mass * Velocity

Impulse = Force * Time

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the equation for momentum?

momentum (p) = mass + velocity

momentum (p) = mass * velocity

momentum (p) = mass / velocity

momentum (p) = mass - velocity

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Define perfectly inelastic collisions.

Two objects stick together after colliding and move as a single unit with a common velocity.

Two objects collide and come to a complete stop.

Two objects bounce off each other and move in opposite directions.

Two objects collide and continue moving with different velocities.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a perfectly inelastic collision, what happens to the kinetic energy of the system?

The kinetic energy of the system increases.

The kinetic energy of the system is not conserved.

The kinetic energy of the system decreases.

The kinetic energy of the system remains the same.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are elastic collisions?

Collisions where both momentum and kinetic energy are conserved.

Collisions where neither momentum nor kinetic energy are conserved.

Collisions where only kinetic energy is conserved.

Collisions where only momentum is conserved.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the difference between inelastic and elastic collisions?

In an inelastic collision, kinetic energy is NOT conserved and the objects stick together after the collision. In an elastic collision, kinetic energy IS conserved and the objects bounce off each other after the collision.

In an inelastic collision, kinetic energy IS conserved and the objects stick together after the collision. In an elastic collision, kinetic energy is NOT conserved and the objects bounce off each other after the collision.

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