Momentum&impulse

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

What is impulse?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time, calculated as Impulse = Force × Time.

Front

What is the principle of conservation of momentum?

Back

In an isolated system, the total momentum before an event (like a collision) is equal to the total momentum after the event.

Front

What are the units of momentum?

Back

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

Front

What are the units of impulse?

Back

The units of impulse are N.s (Newton second).

Front

How does the collision time affect impulse?

Back

A longer collision time results in a smaller force for the same impulse, as impulse is the product of force and time.

Front

Can a small object have the same momentum as a large object?

Back

Yes, a small object can have the same momentum as a large object if it has a sufficiently high velocity.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's second law, Force = Mass × Acceleration (F = ma).

Front

How do you calculate the mass of an object if you know its momentum and velocity?

Back

Mass can be calculated using the formula m = p/v, where p is momentum and v is velocity.

Front

What happens to momentum in a perfectly elastic collision?

Back

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