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Conservation of Momentum in Collisions

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Questions and Answers

According to Newton's second law, the net force on an object is equal to its mass times its acceleration.

False

True (correct)

What is momentum?

The net force on an object

The change in mass times velocity over time

The derivative of mass times velocity with respect to time

The quantity of motion of an object (correct)

What qualities need to be taken into account to understand collisions?

Mass and acceleration

Force and time

Mass and velocity

Momentum and impulse (correct)

Which of the following best describes a perfectly inelastic collision?

A collision where objects stick together Signup and view all the answers

What is the center of mass?

The average position of all the mass in a system Signup and view all the answers

How can the center of mass be calculated?

By measuring the distance from the starting point to each individual mass Signup and view all the answers

Which of the following best describes momentum?

The product of an object's mass and velocity Signup and view all the answers

Which of the following is true about elastic collisions?

Kinetic energy is conserved Signup and view all the answers

What is impulse?

The change in an object's momentum Signup and view all the answers

According to the information given, what is the position of the center of mass of the system?

2 meters Signup and view all the answers

What is the mass of the 4 kilogram ball?

4 kilograms Signup and view all the answers

What is the mass of the 2 kilogram ball?

2 kilograms Signup and view all the answers

What is the position of the 4 kilogram ball?

3 meters Signup and view all the answers

What is the total mass of the system?

6 kilograms Signup and view all the answers

What is the sum of the masses times their positions for the system?

12 kilogram-meters Signup and view all the answers