Momentum&impulse

Front

What is the definition of impulse in physics?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time. It is calculated as the product of the force and the time duration for which the force acts.

Front

How is impulse mathematically expressed?

Back

Impulse (J) is mathematically expressed as J = F * Δt, where F is the force applied and Δt is the time duration.

Front

What is the relationship between impulse and momentum?

Back

Impulse is equal to the change in momentum of an object. This is expressed as J = Δp, where Δp is the change in momentum.

Front

What is the formula for calculating momentum?

Back

Momentum (p) is calculated using the formula p = m * v, where m is the mass of the object and v is its velocity.

Front

If a 60 kg person comes to a stop from a speed of 40 m/s, what is the impulse experienced by the person?

Back

The impulse experienced is 2400 kg.m/s, calculated as the change in momentum from 2400 kg.m/s to 0 kg.m/s.

Front

What is the unit of impulse?

Back

The unit of impulse is Newton-seconds (N.s) or kg.m/s.

Front

How does the time duration of a force affect impulse?

Back

The longer the force acts on an object, the greater the impulse, as impulse is the product of force and time duration.

Front

What happens to the impulse if the force is doubled while the time remains constant?

Back

If the force is doubled while the time remains constant, the impulse will also double.

Front

What is the impulse-momentum theorem?

Back

The impulse-momentum theorem states that the impulse on an object is equal to the change in its momentum.

Front

How do you calculate the impulse when a force is applied in the opposite direction of motion?

Back

When a force is applied in the opposite direction, the impulse is calculated as the product of the force and the time, and it will result in a negative value indicating a decrease in momentum.