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Doc Al said:
Impulse is a measure of the change in an object's momentum over time. It is calculated by multiplying the force applied to an object by the length of time it is applied.
Impulse and force are directly proportional, meaning that the greater the force applied to an object, the greater the impulse it will experience. However, impulse also takes into account the length of time the force is applied, so a smaller force applied over a longer period of time can have the same impulse as a larger force applied over a shorter period of time.
Yes, impulse can be negative. This occurs when the force applied to an object is in the opposite direction of its initial momentum. Negative impulse can result in a decrease in an object's velocity.
Momentum is a measure of an object's motion, while impulse is a measure of the change in an object's momentum. Momentum is a vector quantity, meaning it has both magnitude and direction, while impulse is a scalar quantity, only having magnitude.
Some examples of impulse in everyday life include a goalkeeper in soccer blocking a ball, a car airbag deploying during a collision, and a basketball player jumping and landing on the ground. These actions all involve a force being applied to an object over a certain period of time, resulting in a change in momentum and therefore, impulse.
