Momentum Review

Front

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

Back

The bike has more momentum because momentum is the product of mass and velocity, and the car's velocity is zero.

Front

A 60kg astronaut floating in space throws a 20kg moonrock. Which object is moving at a greater speed after the throw?

Back

The moonrock is moving at a greater speed after the throw due to the conservation of momentum.

Front

Momentum is a ____________________ quantity.

Back

Momentum is a vector quantity, meaning it has both magnitude and direction.

Front

What is the unit for momentum?

Back

The unit for momentum is kg m/sec.

Front

A LARGE object collides INELASTICALLY with a SMALL object. Which object experiences a greater ACCELERATION during the collision?

Back

The small object experiences a greater acceleration due to its smaller mass.

Front

Define momentum.

Back

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

Front

What is the principle of conservation of momentum?

Back

The total momentum of a closed system remains constant if no external forces act on it.

Front

How does mass affect momentum?

Back

Momentum increases with mass; a heavier object moving at the same speed has more momentum than a lighter object.

Front

What happens to momentum in an elastic collision?

Back

In an elastic collision, both momentum and kinetic energy are conserved.

Front

What happens to momentum in an inelastic collision?

Back

In an inelastic collision, momentum is conserved, but kinetic energy is not.