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greg_rack
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I get that the impulse is I=FΔt, but why is it even equal to change in momentum caused by the force under consideration?
I still haven't studied integrals...etotheipi said:$$I = \int_{t_1}^{t_2} \vec{F} \cdot dt = \int_{t_1}^{t_2} \frac{d\vec{P}}{dt} dt = \vec{P}(t_2) - \vec{P}(t_1) = \Delta \vec{P}$$##\vec{F}## is the net force on the particle or extended body.
Thank you so much, now it's clear!etotheipi said:For constant ##\vec{F}##,$$I = \vec{F} \Delta t = \frac{d\vec{P}}{dt} \Delta t = \Delta \vec{P}$$
Please, see:greg_rack said:Summary:: I've studied momentum and impulse a long time ago, don't judge the silliness of this question
I get that the impulse is I=FΔt, but why is it even equal to change in momentum caused by the force under consideration?
Really exhaustive explanation, thank you!Lnewqban said:Please, see:
https://en.m.wikipedia.org/wiki/Impulse_(physics)
https://en.m.wikipedia.org/wiki/Momentum
"A resultant force causes acceleration and a change in the velocity of the body for as long as it acts. A resultant force applied over a longer time therefore produces a bigger change in linear momentum than the same force applied briefly: the change in momentum is equal to the product of the average force and duration. Conversely, a small force applied for a long time produces the same change in momentum—the same impulse—as a larger force applied briefly."
Impulse is the change in momentum of an object, and momentum is the product of an object's mass and velocity.
Impulse and momentum are directly proportional to each other. This means that as impulse increases, momentum also increases.
The formula for impulse is I = F * Δt, where I is impulse, F is the force applied, and Δt is the time interval over which the force is applied.
The conservation of momentum states that the total momentum of a system remains constant unless acted upon by an external force. This means that the impulse applied to one object will be equal and opposite to the impulse applied to another object, resulting in a net change of zero in the system's total momentum.
Impulse causes a change in an object's velocity, either by increasing or decreasing it. This change in velocity can result in a change in the direction of motion or a change in the object's speed.