Conservation of Momentum

Front

What is the principle of conservation of momentum?

Back

The principle 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

In any collision, what quantity is always constant?

Back

Total Momentum.

Front

What happens to the momentum of a big fish that swallows a small fish?

Back

The big fish's momentum remains constant, but its velocity decreases after swallowing the small fish.

Front

If a person on a stationary skateboard throws a bowling ball, what happens to their speed?

Back

The person will move in the opposite direction, and their speed can be calculated using the conservation of momentum.

Front

Calculate the speed of a person on a skateboard after throwing a bowling ball at 5.0 m/s if their mass is less than the ball's mass.

Back

1.5 m/s.

Front

What is the formula for calculating momentum?

Back

Momentum (p) = mass (m) × velocity (v).

Front

In a collision, if one object is at rest, how does it affect the momentum of the moving object?

Back

The total momentum before the collision is equal to the total momentum after the collision, affecting the velocities of both objects.

Front

What happens to the momentum of two skaters who push off each other?

Back

Both skaters will have equal and opposite momentum, but their velocities will differ based on their masses.

Front

If a 9300 kg railroad car traveling at 5 m/s strikes a 5000 kg boxcar at rest, what is the speed of the second boxcar after the collision?

Back

9.3 m/s.

Front

What is the relationship between mass and velocity in the context of momentum?

Back

For a constant momentum, if mass increases, velocity must decrease, and vice versa.