M3D6 Homework: Elastic Collisions

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = mv, where p is momentum, m is mass, and v is velocity.

Front

How do you calculate momentum?

Back

Momentum (p) is calculated using the formula: p = mass (m) × velocity (v). For example, if an object has a mass of 12 kg and is moving at 10 m/s, its momentum is 120 kg*m/s.

Front

What happens to momentum in an elastic collision?

Back

In an elastic collision, the total momentum before the collision is equal to the total momentum after the collision.

Front

What is an elastic collision?

Back

An elastic collision is a type of collision where both momentum and kinetic energy are conserved.

Front

If two objects of equal mass collide elastically, what happens?

Back

If two objects of equal mass collide elastically and one is at rest, the moving object will stop, and the stationary object will move with the velocity of the first object.

Front

Why does a real car have more momentum than a toy car moving at the same speed?

Back

A real car has more momentum than a toy car moving at the same speed because its mass is greater.

Front

What is the principle of conservation of momentum?

Back

The principle of conservation of momentum states that in a closed system, the total momentum before an event (like a collision) is equal to the total momentum after the event.

Front

What is the relationship between mass and velocity in momentum?

Back

Momentum is directly proportional to both mass and velocity; increasing either mass or velocity increases momentum.

Front

What occurs when two skaters push off each other?

Back

When two skaters push off each other, they experience equal and opposite forces, resulting in different velocities based on their masses.

Front

What is the formula for calculating the total momentum before a collision?

Back

The total momentum before a collision is calculated by summing the momentum of all objects involved: P_before = p1 + p2 + ... + pn.