The formula of impulse is I = ft, and impulse = force times time. If the force acting on an object is a constant force F with the same magnitude and direction, the impulse I is the product of F and the action time T. If the magnitude and direction of F are variable, the vector integral operation is applied to the impulse I..

Impulse is usually used to find the force between objects in a short process (such as impact), that is, to estimate the force from the momentum increment and the time when the object acts. However, this formula can not calculate impulse in all cases, but can only be used to calculate constant force impulse.

However, this formula can not calculate impulse in all cases, but can only be used to calculate constant force impulse.

Pulse formula:

The definition of impulse is I = ft, but this formula can not calculate the impulse in all cases, and can only be used to calculate the constant force impulse. Impulse is a physical quantity that describes the time cumulative effect of force on an object. The impulse of force is a process quantity. When talking about impulse, we must be clear about which force is the impulse at which time.

For example, two objects, A and B, with a mass of 3 kg, are thrown obliquely upward from a height of 30 meters at an initial velocity of 10m/s, and B has no initial velocity drop from a sufficiently large smooth surface. Try to compare the gravity impulses of a and b within 2 seconds.