Impulse and Momentum Flashcard

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 unit of momentum?

Back

The unit of momentum is kg·m/s (kilogram meter per second).

Front

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object, expressed as Impulse = Δp = p_final - p_initial.

Front

How do you calculate momentum?

Back

Momentum (p) is calculated using the formula p = mv, where m is mass in kilograms and v is velocity in meters per second.

Front

What happens to momentum if no external force acts on an object?

Back

If no external force acts on an object, its momentum remains constant (law of conservation of momentum).

Front

What is the formula for calculating impulse?

Back

Impulse (J) is calculated using the formula J = F × Δt, where F is the average force applied and Δt is the time duration.

Front

What is the unit for impulse?

Back

The unit for impulse is Newton-seconds (N·s).

Front

If a net force acts on an object, what can happen to its momentum?

Back

If a net force acts on an object, its momentum will either increase or decrease depending on the direction of the force.

Front

How do you find the final velocity of an object given force and time?

Back

Final velocity (v_f) can be found using the formula v_f = v_i + (F/m) × t, where v_i is initial velocity, F is force, m is mass, and t is time.