Momentum - 2021/2022

Front

What is momentum?

Back

Momentum is defined as mass in motion, calculated as the product of an object's mass and its velocity.

Front

What are the units of momentum?

Back

The units of momentum are kg m/s (kilogram meter per second).

Front

How is momentum calculated?

Back

Momentum (p) is calculated using the formula: p = mass (m) × velocity (v).

Front

If a 2 kg cart has a momentum of 16 kg m/s, what is its velocity?

Back

The velocity of the cart is 8 m/s.

Front

What happens to momentum in a closed system before and after a collision?

Back

The total momentum before a collision is equal to the total momentum after a collision.

Front

Which has the least amount of momentum: an ant walking, an ant at rest, an elephant walking, or an elephant running?

Back

An ant at rest has the least amount of momentum.

Front

What is the relationship between mass and momentum?

Back

Momentum increases with an increase in mass if velocity remains constant.

Front

What is the relationship between velocity and momentum?

Back

Momentum increases with an increase in velocity if mass remains constant.

Front

What is an example of a situation where momentum is conserved?

Back

In a perfectly elastic collision, the total momentum before and after the collision remains the same.

Front

What is the difference between elastic and inelastic collisions in terms of momentum?

Back

In elastic collisions, both momentum and kinetic energy are conserved; in inelastic collisions, only momentum is conserved.